Sunex 3/8 in. Drive 10 mm Hex Driver Impact Socket

Features and Benefits: Forged from the finest chrome-molybdenum alloy steel, the best choice for strength Radius corner design extends the life of fasteners; design drives the side of the fastener instead of the corner Design also avoids rounding of rusted or damaged fasteners Black oxide finish and has etchings for identification Lifetime warranty does not cover abuse   This is a hex driver impact socket that is 10 mm. It is 3/8 in. drive. Designed to tackle the toughest jobs with solid durability and keeps them pounding job after job.