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", 5/16", 3/8", 7/16" & 1/2" Insert Magnetic Nut Drivers.