Irwin 53226 10 Piece 1/8-Inch to 13/32-Inch Hex Head Multi-Spline Screw and Bolt Extractor Assortment in Plastic Case Extractor size and recommended drill bit size are etched on each tool for easy identification Includes 1-8" through 13/32" Aggressive left hand spiral design for extra gripping power Included in a plastic molded case 10 piece set