• 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
Tekton's shallow 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.