TEKTON 3/8 Inch Drive 12 Point Impact Socket Set with Rails, 24 Piece (8 19 mm) SID91213

Includes 12-pc. 3/8 inch drive standard 12-point metric impact sockets: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 mm; 12-pc. 3/8 inch drive deep 12-point metric impact sockets: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 mm; Socket rails and tray Sizes are marked both with a high-visibility laser marking and a permanent stamped marking that won't wear off 12-point opening fits double hex (12-sided), hex, and square-shaped 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