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2. Drill bit shank - Wikipedia

   en.wikipedia.org/wiki/Drill_bit_shank

   The drill bit is not held solidly in the chuck, but can slide back and forth like a piston; it does not slip during rotation due to the non-circular shank cross-section, matching the chuck. The hammer of the drill acts to accelerate only the drill bit itself, and not the large mass of the chuck, which makes hammer drilling with an SDS shank ...

3. List of drill and tap sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_drill_and_tap_sizes

   One of the most common ways to produce such threaded holes is to drill a hole of appropriate size with a drill bit and then tap it with a tap. Each standard size of female screw thread has one or several corresponding drill bit sizes that are within the range of appropriate size—slightly larger than the minor diameter of the mating male ...

4. List of tool manufacturers - Wikipedia

   en.wikipedia.org/wiki/List_of_tool_manufacturers

   Milwaukee, Hart, Ridgid power tools, [31] Ryobi, Homelite, Hoover, Vax, [32] Bissell, Dirt Devil. [33] Hand-held power tools TTS Tooltechnic Systems: Wendlingen, Germany Festool, Tanos, SawStop: Hand-held power tools, dust extraction tools, workplace organization United Pacific Industries Ltd: Spear & Jackson: Hand tools and garden tools

5. Ryobi - Wikipedia

   en.wikipedia.org/wiki/Ryobi

   Ryobi Limited (リョービ株式会社, Ryōbi Kabushiki-gaisha, Japanese: [ɾʲoːꜜbi]; English: / r aɪ ˈ oʊ b i / or / r i ˈ oʊ b i /) is a Japanese manufacturer of components for automobiles, electronics, and telecommunications industries.

6. Drill bit - Wikipedia

   en.wikipedia.org/wiki/Drill_bit

   While the above is a common use of center drill bits, it is a technically incorrect practice and should not be considered for production use. The correct tool to start a traditionally drilled hole (a hole drilled by a high-speed steel (HSS) twist drill bit) is a spotting drill bit (or a spot drill bit, as they are referenced in the U.S.). The ...

7. Drill bit (well) - Wikipedia

   en.wikipedia.org/wiki/Drill_bit_(well)

   In the oil and gas industry, a drill bit is a tool designed to produce a generally cylindrical hole in the Earth’s crust by the rotary drilling method for the discovery and extraction of hydrocarbons such as crude oil and natural gas. This type of tool is alternately referred to as a rock bit, or simply a bit. The hole diameter produced by ...