Straight flute screw extractors are designed for removing broken material such as bolts and screws in softer materials. The straight flute will not enlarge material being removed. Left hand jobber drills are for general purpose drill construction. Features a left hand helix for screw machine applications where spindles rotate counter-clockwise. 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.
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