TEKTON 3/8 Inch Drive 6-Point Impact Socket Set with Rails, 38-Piece (6-24 mm) | SID91211

Sizes are marked both with a high-visibility laser marking and a permanent stamped marking that won't wear off 6-point socket openings provide an exact fit for hex fasteners Radiused corners prevent fastener round-off by applying force to a fastener's flat sides, rather than its corners Meets a minimum of 1.3 times the ANSI/ASME standard for proof torque Twist-to-lock socket rail organizes and securely holds sockets in place, both for in your toolbox and on the go