TEKTON 4840 3/8-Inch Drive Deep Impact Socket Set, Metric, 6-Point, 10 mm - 19 mm, 8-Sockets 6-point socket design grips the flat sides of fasteners, not just corners, preventing round-off An extra-deep broach accommodates longer fasteners Stamped size markings make size selection easy Made from forged and heat-treated carbon steel construction with a corrosion-resistant black oxide finish Meets or exceeds ANSI performance standards