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.Features Aggressive left hand spiral design for extra gripping power Extractor size and recommended drill bit size are etched on each tool. Designed to remove broken studs, bolts, socket screws and fittings Set includes metal index case Spiral flutes are designed to embed themselves deeper into the metal as you turn the tool, so as the fastener resistance increases, the extractor's grip increases Length: 6.800 in Weight: 0.856 lbs Height: 0.800 in Width: 4.500 in Extractor Count: 5 Drill Bit Count: 5 Extractor Sizes: EX-1, EX-2, EX-3, EX-4, EX-5 Drill Bit Sizes: 5/64 in, 7/64 in, 5/32 in, 1/4 in, 19/64 in Material: Metal index case Country of Origin: United States