Patented Ergonomic Handle Increases Torque 10x - 20x Industrial Strength Wrenches are Manufactured to Exacting Standards Polished, Chamfered Hex Key Edges Give a Better Fit and Reduce Stripped Screws Wrench Sizes: 3/8", 5/16", 1/4", 7/32", 3/16", 5/32", 9/64", 1/8", 7/64" Lifetime Guarantee US Patnet Nos: 5592859, 5911799, 6311587, D435415, D459967, 6490954, 6763744 15214$11.95 ©2004 WAGIC Inc.