Shockwave, 5 Piece, Insert Nut Driver Set, Engineered For Extreme Durability, Made From Proprietary Steel & Heat Treated To Control Hardness, Feature An Innovatively Designed Geometric Shock Absorption Zone To Extend Life, The Forged Tip Allows For A Secure Grip & Maximum Contact Eliminating Stripping Or Slipping, Color Coded Band For Easy Size Identification, Set Includes 1/4 inches, 5/16 inches, 3/8 inches, 7/16 inches & 1/2 inches Insert Magnetic Nut Drivers.