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  2. Watts Brothers Tool Works - Wikipedia

    en.wikipedia.org/wiki/Watts_Brothers_Tool_Works

    Watts Brothers Tool Works is a tool manufacturer located in Wilmerding, Pennsylvania. They are known for manufacturing drill bits that can drill square holes, [1] [2] including blind holes, which cannot be made with other methods such as broaching. The Harry Watts square drill bit is based on a Reuleaux triangle shape. It is used together with ...

  3. Hughes Tool Company - Wikipedia

    en.wikipedia.org/wiki/Hughes_Tool_Company

    Hughes Tool Company was an American manufacturer of drill bits. Founded in 1908, [1] it was merged into Baker Hughes Incorporated in 1987. History.

  4. Irwin Industrial Tools - Wikipedia

    en.wikipedia.org/wiki/Irwin_Industrial_Tools

    Irwin Industrial Tools is an American manufacturer and distributor of hand tools and power tool accessories. It is owned by Stanley Black & Decker . It is best known for producing Vise-Grip locking pliers .

  5. Ridgid - Wikipedia

    en.wikipedia.org/wiki/Ridgid

    The Ridge Tool Company is an American manufacturing company that makes and distributes tools under the Ridgid brand name. The company was founded in 1923 in North Ridgeville, Ohio. [1]

  6. Drill bit - Wikipedia

    en.wikipedia.org/wiki/Drill_bit

    From top: Spade, brad point, masonry, and twist drills bits Drill bit (upper left), mounted on a pistol-grip electric drill A set of masonry drills. A drill bit is a cutting tool used in a drill to remove material to create holes, almost always of circular cross-section. Drill bits come in many sizes and shapes and can create different kinds of ...

  7. Drill bit (well) - Wikipedia

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

    These bits mainly fall into two classes depending on the manufacture of the cutting elements or "teeth". Steel-tooth bits have cones that have wedge-shaped teeth milled directly in the cone steel itself. Extremely hard tungsten carbide material is often applied to the surfaces of the teeth by a welding process to improve durability.