INCLUDES: • (1) Socket extensionFEATURES:• Patented locking feature locks sockets to the extension with exceptional force.• Knurled shank provides a slip-resistant grip when hand-turning the extension.• Black oxide finish• Easy operating spring loaded locking mechanismSPECIFICATIONS:• Item: Impact Socket Extension• SAE or Metric: SAE• Drive Size: 3/8"• Overall Length: 12"• Drive Type: Square• Number of Pieces: 1• Finish: Black Oxide• Features: Locking Extensions, Positive Socket Retention• Impact Rated: YesProto® J7212L - Socket Extensions - 3/8" Drive Impact Socket Extension J7212L