TEKTON impact sockets have both a high-visibility laser marking and a permanent stamped marking that won’t wear off. They’re designed for use with both friction ring anvils and detent pin anvils. Precise 6-point openings provide an exact fit for hex fasteners. Each socket size meets a minimum of 1.3 times the ANSI/ASME standard for proof torque. Contains 9-pc. 3/8 inch drive deep 6-point impact sockets: 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4 in.; Socket rail.