CASOMAN Complete 3/8" and 1/2” Drive Impact Socket Set, inch (SAE) /Metric, Cr-V, 6-Point, 3/8"- 1-1/4", 8 mm - 32 mm, Deep & Shallow, 38-Piece Impact Socket Set. It is built for using with impact tools. Our impact sockets are made from high-strength chrome vanadium steel, Corrosion-resistant black electroplate finish, resulting in a longer useable life.