Craftsman 5/16 Inch 6 Point Combination Wrench, 9-44382 Heat-treated, oil quenched and tempered for a uniform hardness and maximum strength Nickel-chrome plated to resist rust and corrosion to simplify cleaning Side 1 Wrench Size: 5/16 inches Number of Points: 6 Point.Wrench Length: 4-3/8 inches Backed by Craftsman's Lifetime Guarantee