The IRWIN HANSON Spiral Extractor and Drill Bit Set, 10 Piece, features an aggressive left hand design for extra gripping power. Easy out style spiral flutes embed themselves deeper into the metal as the tool is turned so grip increases as resistance increases. With sizes etched onto each tool for quick identification, it includes EX-1, EX-2, EX-3, EX-4, and EX-5 extractors; 5/64", 7/64", 5/32", 1/4", and 19/64" drill bits and a metal index case.