Conical screw extractors with 1/2" to 16 mm hex grip. Dimensions: 3, 4, 5, 5.5, 6, 8, 10, 11, 12 and 14 mm. 1/8", 3/16", 1/4", 3/8" and 1/2". For easy removal of damaged and broken right-hand threaded bolts and screws. Drill a hole in the seized screw end, then screw in the left-hand threaded screw extractor. The screw/bolt is unscrewed with its own threads. Can also be used on damaged hex screws without drilling.
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