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Description
Bosch HS1809 1-3/4 In Square 16 Tooth Bushing Tool Bit Round Hex Spline Shank Heavy Duty Concrete Masonry Stone Aggregate Scabbler Surface TexturingRoughen Smooth Concrete and Texture Masonry Surfaces Rapidly with a 16 Tooth Forged Scabbling Matrix Prepare slick commercial floors, level irregular masonry humps, and scarify exterior pathways for high adhesion structural overlays with the specialized texturing force of the Bosch HS1809 1 3 4" x 9 1 4" 16 Tooth Round Hex Spline Shank Bushing Tool. Masterfully calibrated for industrial floor coating crews, sidewalk repair teams, masonry contractors,
Roughen Smooth Concrete and Texture Masonry Surfaces Rapidly with a 16-Tooth Forged Scabbling Matrix
Prepare slick commercial floors, level irregular masonry humps, and scarify exterior pathways for high-adhesion structural overlays with the specialized texturing force of the Bosch HS1809 1-3/4" x 9-1/4" 16-Tooth Round Hex / Spline Shank Bushing Tool. Masterfully calibrated for industrial floor coating crews, sidewalk repair teams, masonry contractors, and concrete decorative artisans, this premium scabbler accessory eliminates costly surface bonding failures. Standard chipping chisels or narrow points strip localized chunks but leave an irregular, wavy profile unsuitable for subsequent epoxy coatings or self-leveling underlayments. This advanced Bosch bushing head resolves that jobsite bottleneck by utilizing a perfectly flat 16-tooth square grid that multi-punctures concrete surfaces simultaneously, delivering a uniform, high-key profile in a single continuous operational pass.
Uncompromising tool longevity and zero-slip mechanical power transmission form the architectural foundation of this solid, monolithic texturing bit. Forged in Italy from an elite commercial alloy steel matrix, the entire structure undergoes a proprietary heat-treat hardening sequence that tempers the core while protecting the striking teeth against premature blunting or cracking when colliding with dense river-rock aggregate components. The precision-machined round hex / spline drive shank establishes a secure connection within heavy-duty demolition hammers and large rotary hammers configured for commercial spline tool holders. This tight mechanical fit prevents energy dissipation down the shaft, directing 100% of your machine's internal kinetic strike straight to the work face while damping jarring harmonic recoil waves before they reach the operator's hands.
Key Features
- Aggressive 16-Tooth Head Matrix: Precision pyramid-tooth layout is engineered to pulverize surface layers, strip high spots, and add high-bond texture.
- Universal Spline / Round Hex Shank: Dual-pattern drive shank integrates smoothly with industrial spline-fit rotary hammers and demolition breaker tools.
- Proprietary Thermal Tempering Loop: Advanced inductive heat-treating ensures deep cross-sectional tool hardness for reliable longevity under extreme friction.
- Monolithic One-Piece Forging: Solid single-piece layout lacks weak mechanical seams, entirely eliminating sudden snaps under severe vibration.
- Optimized Overlay Preparation: Ideal tool profile for creating a high-grip surface on concrete pads prior to applying structural treatments.
- Balanced Feedback Damping: Formulated alloy steel composition acts as an inline acoustic buffer to absorb heavy harmonic kickback shock.
What's Included
- (1) Bosch 1-3/4" x 9-1/4" 16-Tooth Bushing Tool Round Hex / Spline Hammer Steel Bit (HS1809)
Specifications
| Specification Profile | Details / Performance Value |
|---|---|
| Brand Name | Bosch |
| Model Number (OEM Part) | HS1809 |
| Product Accessory Type | Industrial One-Piece Bushing Tool / Scabbler Bit |
| Drive Shank System Configuration | Large Spline / Round Hex Combo Drive |
| Shank Diameter Fitment | 0.75 inches |
| Bushing Head Style Geometry | 16-Tooth Square Profile Grid |
| Chisel Head Cutting Face Width | 1.75 inches |
| Total Tool Accessory Length | 9.25 inches |
| Material Tool Composition | Proprietary Heat-Treated Alloy Steel |
| Primary Application Scope | Roughing Up Concrete, Surface Texturing, and Cleaning Excess Bumps |
| Approved Target Substrates | Cured Poured Concrete, Natural Masonry Stone, and Commercial Asphalt |
| Compatible Power Tool Tooling | Spline-Drive Demolition Breakers and Industrial Rotary Hammers |
| Assembled Product Weight | 2.33 lbs |
| Product Condition Class | Brand New Original Stock |
| Universal Barcode UPC | 000346245813 |
| Country of Origin | Italy |
| California Proposition 65 Label | Yes Warning Label Required |
| Required Safety Equipment | ANSI Approved Eye, Ear, and OSHA Dust Protection Systems |
Pro-Tip: When texturing vast subfloor profiles or leveling prominent high bumps with this 16-tooth bushing bit, hold your rotary hammer completely perpendicular at a precise 90-degree angle to the slab. Allowing the heavy machine tool to tilt or track obliquely causes only one row of pyramid points to make physical substrate contact, concentrating severe localized friction that can prematurely strip the cutting teeth and impart uneven grooves into the pad. Avoid pressing down with excessive force; let the native mechanical impact stroke of the breaker piston do the crushing work. Always run an active OSHA-compliant dust extraction shroud over the application point, blow loose aggregate debris out of your machine's spline sleeve before installation, and lightly lubricate the round hex collar tracks with premium grease to avoid thermal friction binding during extended operations.
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4.6 ★★★★★
Based on 1854 reviews
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Product Reviews
★★★★★ 5
Wicked Satire, yet Strangely Familiar
Format: Mass Market Paperback
Heinlein's satire is wicked and well-placed, reminiscent of Voltaire and Swift. IF you love British comedy, you'll love this book. Both come from the same sarcastic taproot. I'm still debating whether or not the main charter is Smith or Jubal. Maybe it is us, since we need to recognize that we are Juba, and must nurture, and eventually become like Smith.
Smith's reflective, contemplative message, reminds of Thomas A Kempis (
), James Allen (
), Lao Tzu (
). Smith's message is nothing new: as C. S. Lewis pointed out, "Really great moral teachers never do introduce new moralities: it is quacks and cranks who do that... The real job of every moral teacher is to keep on bringing us back, time after time, to the old simple principles which we are all so anxious not to see."
.
In fact, Smith's slogan "Thou art God" is merely run-of-the-mill Christianity:
* "Inasmuch as ye have done it unto one of the least of these my brethren, ye have done it unto me."
* "Be ye therefore perfect, even as your Father which is in heaven is perfect."
* "Therefore, what manner of men ought ye to be? Verily I say unto you, even as I am."
* "Ye are gods; and all of you are children of the most High."
* "God became man so that man might be god."
* "It is a serious thing to live in a society of possible gods and goddesses to remember that the dullest and most uninteresting person you may talk to may one day be a creature which, if you saw it now, you would be strongly tempted to worship, or else a horror and corruption such as you now meet if at all only in a nightmare. . . . There are no ordinary people. You have never met a mere mortal, Nations, cultures, arts, civilizations, these are mortal, and their life is to ours as the life of a gnat. But it is immortals whom we joke with, work with, marry, snub, and exploit--immortal horrors or ever lasting splendours."
.
Heinlein seems to have stolen a page from Søren Kierkegaard, who tried to re-Christianize Christianity (
, 458). To paraphrase John, "Brethren, I write no new commandment unto you, but an old commandment which ye had from the beginning."
As I read this book, Smith struck me as oddly familiar. His first name, Michael, refers to the Archangel, the captain of the Lord's army. The second name, Valentine, is the patron saint of all shades of love, phileo, agape, eros, and romance. The last name, Smith, makes him Everyman.
But I wonder if there is something more. What happens to Smith is common to all founders of religions--Abraham, Jesus, Mohammed, and so forth. There is evolution, turns and twists of fate, and eventual triumph. However, there is a deeper nuance. Society begins with vulgarized Christianity, then there was the Fosterite Revolution, and another apostasy and commercialization of religion as a Megachurch. And lastly comes along Smith, with his Martian philosophy. This bears a strong parallel to the life of Joseph Smith
. In fact, both have a similar martyrdom: "Thou art God" versus "O Lord My God."
The satire can get tedious at time, but I think this flaw is excusable. As I read, I kept thinking that this book could loose about 1/3rd of the text. But on the other hand, the artistry and beauty of the wicked satire forces me to say, "Leave it alone."
Note: This book is the Q document for so much other fiction. I see shades of "Dune" here and there. Smith the new prophet is akin to Ender, the Speaker for the Dead. And if you have seen Star Trek: The Original Series episode "Charlie X," some of the elements will seem a bit too familiar. Keep in mind that this book came first, and that it does a much better job of mixing wit and wisdom than Kirk and Spock. There is no comparison--after reading this book, "Charlie X" rolls like a flat tire.
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Reviewed in the United States on July 9, 2007
★★★★★ 5
Really nice
Format: Paperback
Great read and gift
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Reviewed in the United States on May 31, 2026
★★★★★ 4
Classic, but a bit disappointed
I’ve always wanted to read this book. Heard a lot about it and it’s importance in the science fiction genre. But I didn’t care for Heinlein’s style of writing. There was a lot of subtle humor in it that was enjoyable, and I suspect he meant for it to be a caricature of humanity. I enjoyed the analysis of human nature throughout the story. But I was disappointed in the direction the story took toward the end. It seemed like a cheap way to develop the possibilities that had been laid out in the rest of the book. I want to believe human beings would value the opportunity and show up in a better way if such a thing really happened. I felt like the main character was so rich and unique in the beginning, but in the end, he felt flat and inscrutable. Having said all of that, maybe if I hadn’t been swayed by my own expectations, I would have enjoyed the story more. I’ll have to try some of his other books and see what I think!
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Reviewed in the United States on May 28, 2024
★★★★★ 5
Great story!
Format: Mass Market Paperback
I read this book as a teenager, in the 1960s, and just, now, finished rereading it, at age 65. I see that I missed many of the author's ideas (due to my youthful lusts, antics, and ignorance of life and of the Bible). "Stranger in a Strange Land" struggles with boundaries of self, morality, and what may constitute/govern a normal healthy society. The author pokes at our spiritual needs, ideas, or rituals upon which we all depend to order our lives, whether we be atheistic, pantheistic, or monotheistic. By minimizing God and godhood to the level of individual understanding and growth, the Heinlein's story posits that all philosophical views need not be antagonistic toward one another; that, by default, truth is and should be relative, given our potentially reformed natural self-interests. Whether a `religious' or irreligious person or organization is primitive, civilized, or `who-cares', Heinlein poses that, despite our ideologies that distinguish us from others, or unite us, only a growing constructive self-awareness is really important, not whether God really exists or whether we will face a final judgment. The author's trick to redemption is how we decide to get along with ourselves and our neighbors, within a `fly right, or mess up and go back to the beginning' scenario, in contrast to the biblical one-life-one-chance view. By design or default, in this story, Heinlein relegates God below human self-actualization, and allows no room for absolute truth. Heinlein's self-fulfilling self-actualization is entirely at odds with biblical Christianity and biblical Judaism, yet quite at home with most religions and faiths that rely on salvation by personal works, and reincarnation-based religions. Maybe that was part of the author's point in telling the story.
When it comes to putting a halt to abusive powers, I have to chuckle at how Heinlein has Smith frustrate the overbearing powers-that-be. A thought struck me about twenty years ago that those who have power or understanding have a God-given responsibility to exercise discipline and restraint with those who lack power or understanding. Having more power or understanding than someone or something else does not obviate one's responsibility to exercise that power or understanding to better the world in which we live, nor does it entitle one to do ought but to treat others with love, respect, and decency, which, for the betterment of society and our world, may require that one's power or understanding be exercised to identify or destroy evil. Though this philosophy is exercised by the lead character within the story, the clarity of this comes late to Valentine Michael Smith, yet, sadly, such clarity does not move him to embrace an absolute God, absolute truth, nor his own existence as a created being that is not God, leaving Heinlein's view of life and after-life harshly in contrast to the biblical viewpoint, hence at odds with God. Martian or human, in the end, Heinlein simply does a shell game with his characters, when the issue of death arises, leaving readers to guess in what level the author will eventually hide them, to avoid a final judgment, leaving each soul's story to continue ad infinitum, ad nauseam, without any ultimate accountability.
This is an entertaining science fiction story, yet, Heinlein's ideas, in this sexual-religious-social romp, border on theological sophistry. His ideas will probably offend most established points of view. Despite his general bravado, and so bold a topic, Heinlein omits balanced discussion among the characters, fails to deal with any absolute truth or true final judgment of evil, and perfunctorily dismisses biblical views that might be germane to cogent biblical discussion. There are two upwelling truths that the author has twisted and cheapened them considerably, by his denial of absolute truth and avoiding our accountability to God's perfect righteousness. Those are self-sacrificing love and the inevitability that every soul is responsible for her/his own thoughts and actions. Though he allows watered down versions of those traditional moral elements to remain, Heinlein (who must have seen too many money-hungry medicine shows, tent meetings, and carnival acts) relies solely on human constructive self-awareness, self-discipline, and self-empowerment to pose a stab at a positive future for humanity and the afterlife. The story's quasi-moral might read, "Find any way to beat the present system and exploit it at almost any cost, so long as no one really gets hurt." Smith's earthly end-game of self-sacrifice is a corrupted shadow of Christ's. Smith's is a twisted image of self-sacrifice, a huckster's trick to work the crowd, avoiding entirely the biblical God and plan of Christ. Heinlein's bootstrap theology, in the end, can neither respect nor agree upon one God, nor save itself from its own moral meanderings and wishful unthinking of human sin.
As an author, myself, I would add that every one of our actions, gestures, and our written or spoken utterances, has its consequences, and that we are ultimately responsible, to God, for everything that we generate and utter. I believe that Heinlein's story agrees partly with my belief, except that Heinlein leaves the one true God completely out of his story. Despite Heinlein's philosophical thrust that everyone can claim "Thou art God", for self or others, I personally subscribe to the biblical view that all things and people are created by God, and that He holds us together by His Laws and will, and that there is, yet, a separation that He reserves between us and Him, that can only be bridged or reconciled through His Christ, and, furthermore, that we are the only part of His Creation that has been offered that exclusive plan of redemption. By contrast, Heinlein's story offers the carrot of constructive self-awareness as the means of possible redemption for humanity, insecurely hoping to save us from ourselves.
Craig M. Szwed
(Author, photographer, combat veteran, father, composer)
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Reviewed in the United States on May 18, 2013
★★★★★ 5
A True Arthurian Legend
Format: Mass Market Paperback
The Once and Future King provides an excellent perspective into the world of Arthur, the King of England. This book is divided into four sections, each dealing with the different aspects of Arthur's life, including both the good and the bad. The first book, the Sword and the Stone, has been immortalized by countless movies, such as the one by Disney. This book deals with the upbringing of Arthur, or in this case, Wart, his childhood nickname. Here we see the trials Wart must face as he learns about the many forms of leadership, courtesy of his mentor, Merlyn.
The second book, the Queen of Air and Darkness, is a prelude to the collapse of Arthur's kingdom. The result of this book begins to brew throughout the entire novel, finally impacting at the end of the final book.
The third book, the Ill-Made Knight, is my personal favorite. This book is about Lancelot's personal quest to become the best knight in the world. This book is filled with exciting quests that Lancelot has taken up, including such things as saving a maiden from a boiling pot of water, as well as the ill-fated quest to find the Holy Grail.
The fourth and final book, the Candle in the Wind, deals with the collapse of Arthur's kingdom. Arthur's sins "come home to roost" in this book, forcing him to make decisions that could jeopardize the safety of his wife, Guenever, and his best friend, Lancelot.
This novel is truly one of the classic fantasy books that one reads and never forgets. Although there are many portrayals of the Arthurian legend, this is without a doubt one of the better ones.
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Reviewed in the United States on September 6, 2004