Features These 3/8 inch drive socket extensions have a three-eighths inch square drive that’s compatible with drive tools of the same size. Output Drive Size / 3/8 in Output Drive Shape / Square Output Drive Gender / Male Input Drive Size / 3/8 in Input Drive Shape / Square Input Drive Gender / Female Overall Length / 3 in Drive Type / Hand Finish / Chrome Insulated / No Standards / ASME B107.500 Locking / No Non-Sparking / No Number of Pieces / 1 Socket Extension Type / Standard