. Surface treated with abrasion-resistant black oxide.#10 HSS Black Oxide Jobber Length Drill Bit, Number of Flutes: 2 Ideal for production, maintenance or portable drilling jobs.
4 flute carbide tipped glass and tile drill bit improves speed, longevity and accuracy compared to standard spear-tipped glass and tile drills Glass and tile drills have a tungsten carbide tips Suitable for glass, mirrors & very hard ceramic tile Rotation only Slow drilling speeds are recommended.
Features a left hand helix for screw machine applications where spindles rotate counter-clockwise.Straight flute screw extractors are designed for removing broken material such as bolts and screws in softer materials. #1 Straight Flute Screw Extractor and 9/64in Left Hand Drill Bit Kit Left hand drills can also be used to drill out broken bolts Each set comes with one spiral flute screw extractor and matching left hand high speed steel drill bit in a plastic pouch. The straight flute will not enlarge material being removed.