TEKTON 4830 1/4" Drive Deep Impact Socket Set, 5.5-12mm, Metric, 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