TEKTON 3/8 Inch Drive 12 Point Impact Socket Set with Rails, 38 Piece (6 24 mm) SID91215

Includes 19-pc. 3/8 inch drive standard 12-point metric impact sockets: 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 mm; 19-pc. 3/8 inch drive deep 12-point metric impact sockets: 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 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