Irwin 10 Piece Spiral Flute Screw Extractor & Drill Set Screw Range 3/16 to 3/4″ Tool Type Spiral Flute Screw Extractor & Drill Size Range 3/16 – 3/4 inches Number of Pieces 10 Contents (5) Spiral Flute Screw Extractors: #1 – #5 w/Corresponding Left Hand Cobalt Drill Bits For Screw Sizes (inch) 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2, 17/32, 9/16, 19/32, 5/8, 21/32, 11/16, 23/32, 3/4 Extractor Size #1, #2, #3, #4, #5