CASOMAN 3/8" Drive Impact Socket Set, 49 Piece Standard SAE and Metric Sizes (5/16-Inch to 3/4-Inch and 8-22 mm), 6 Point, Cr-V Steel Socket SetMade from drop forged and heat treated chrome vanadium steel (50BV30) with a corrosion resistant black phosphate finish, providing the durability for a hard use. Deep 6 point sockets with chamfered openings and an attachment port compatible with traditional ratchets, High contrast laser etched with high visibility markings and hard stamped with size labels. Set includes: 1 4" 3 8"drill adapter, 3" and 6" drive impact extension bar, 3 8" universal