3/8 in. Drive Master Impact Socket Set (80-Piece)The Sunex 3580 3 8 in. Drive Master Impact Socket Set includes SAE sizes from 5 16 in. to in. and metric sizes from 8mm to 19mm in standard, deep, and universal lengths. It also includes a universal joint and 4 extensions. Each socket has been forged from high grade Cr Mo steel, designed with radius corners, made with chamfered openings, and marked by both laser etching and roll stamping to ensure permanent socket identification. All of this ensures