Screw Extractor, Manufacturer suggested retail price. $246.02 Features and Benefits: Chart showing which drill bits and screw extractors to use to remove the most common sizes of screws and bolts Six spiral screw extractors (Ex-1-Ex-6) Thirteen sizes of multi-spline screw extractors (1/8"-1/2") Sixteen sizes of left hand mechanics length cobalt drill bits (5/64"-1/2") With this new set of Hanson screw extractors and drill bits, you will have the full range of screw extractors, both spiral and multi-spline, that you need to remove the toughest bolts and screws from 3/32" to 15/16" (including metric sizes). The left hand cobalt drill bits are designed to drill into tough screws and bolts counterclockwise which often helps to loosen the bolt while it drills. Manufacturer: Hanson Lifetime warranty does not cover abuse