Neiko 01140A 1/2" Drive Jumbo Hex Bit Socket Set S2 Steel (8 Piece) DURABILITY: bits made of premium S2 alloy steel for superior hardness that reduce wear-outs and insure longevity TORQUE STRENGTH: high strength chrome vanadium steel sockets provide superior torque for greater turning power with mirror chrome finish for corrosion resistance PRECISION BITS: precisely machined bits ensure accurate size, chamfered bit ends insert smoothly into fasteners and protect both bits and fasteners from damaged edges ORGANIZED STORAGE: set includes a sturdy plastic organizing case for secure storage and easy carrying 8-Piece 1/2" Drive jumbo size hex bit socket set includes: SAE 9/16", 5/8", 11/16", 3/4"; Metric 14, 15, 17, 19mm