Product Features

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  • Use extensions to gain access to fasteners in locations that would otherwise be difficult to reach
  • Male square is oriented inline with female squares for use with fixed head torque wrenches
  • Full chamfer at drive opening for easy engagement with drive tools
  • Constructed of high quality tool steel drive end chamfer and four detents help provide quick positive engagement with drive tool on any of the socket drive walls
  • Features 2-thru holes and a groove to accept a Proto® retaining ring or pin or O-ring to help secure extension to the drive tool anvil
  • For use with impact sockets
  • 1-piece construction ensures concentricity
  • Special heat treat ensures long life
  • Precision machined tips for proper fastener engagement