7 pc. easy out screw extractor set. Removes broken screws, bolts, and studs without damaging bolt or hole threads. Screw extractors are made of tempered Chrome-Moly steel. Includes handle. Includes: 1/8" - 1/4", 1/4" - 5/16", 5/16", 7/16", 7/16" - 9/16", 9/16".