Tekton's impact external star (E-Star) sockets are made from 6140 chromium vanadium steel that's heat-treated to 40.5-47.5 HRC for use on impact wrenches. The socket is coated with a manganese phosphate finish to resist corrosion and has both a high-visibility laser size marking and a permanent stamped size marking. The inside of the socket's drive end has smooth walls with no detent grooves to support engagement with drive tools that use friction ring anvils. A detent pin hole on one side of the drive end also supports engagement with detent pin anvil styles. This set includes a portable organization rail.
Precise E-Star Geometry - The internal six-lobe geometry is designed for a high-torque fit that resists slipping
Made from Cr-V Steel - The chromium-vanadium socket is heat-treated to 40.5-47.5 HRC for use on impact wrenches
Corrosion-Resistant - The socket is coated with a manganese phosphate finish to resist corrosion
Two Size Markings - The size is marked with a high-visibility laser marking and a permanent stamped marking that won't rub off
Friction Ring or Detent Pin Anvils - Smooth walls inside the drive end and a detent pin hole make the bit sockets compatible with both drive tool anvil types
Socket Rail - The twist-to-lock clips on the rail hold sockets securely and can be repositioned anywhere along the rail
