3/8 in. Drive Master Impact Socket Set (42-Piece)The Sunex 3342 3 8 in. Drive Master Impact Socket Set includes SAE sizes from 5 16 in. to 3 4 in. and metric sizes from 10mm to 19mm in both standard and deep lengths. It also includes a universal joint and a 3 in. extension. Each socket has been forged from Cr Mo alloy steel, designed with radius corner, made with chamfered openings, and marked by both laser etching and roll stamping to ensure permanent socket identification. All of this ensures our