TEKTON 3/8 Inch Drive 12 Point Impact Socket Set with Rails, 18 Piece (5/16 3/4 in.) SID91212

Includes 9-pc. 3/8 inch drive standard 12-point inch impact sockets: 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4 in.; 9-pc. 3/8 inch drive deep 12-point inch impact sockets: 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4 in.; 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