Full range of spiral and multi-spline extractors for removing the toughest bolts and screws from 3/32in. to 1 5/16in., including metric sizes. Left-hand cobalt drill bits are designed to drill counterclockwise into screws and bolts to loosen them. Set includes 6 spiral screw extractors, 13 multi-spline screw extractors and 16 left-hand mechanics length cobalt drill bits in sizes 5/64in. to 1/2in. U.S.A.
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