35PCS MASTER EXTRACTOR SET Spiral flute extractors for use with bolts/fasteners requiring less torque.Multi-spline extractors when higher torque or restricted access is required. Left handed Hss drill bits, used to drill pilot holes Contents: Multi Spline Extractors; 1/8', 5/32', 3/16', 7/32', 1/4', 9/32', 5/16', 11/32', 3/8', 13/32', 7/16', 15/32', 1/2', Spiral Flutes; #1, #2, #3, #4, #5, #6, HSS Drill Bits; 5/64", 7/64", 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 19/64", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2"