TORX®  is recognized as one of the three most efficient fastening systems because of their ability to transfer greater torque, reduce load and virtually eliminate tool slippage. Input Drive Size: 3/8' Drive Shape: Square Length: 92mm Type: TORX Bit Socket Output Size: T55 Product Dimension (Refer Line Drawing Image): R 3/8 Sq. Dr. TORX® T55 Bit Socket - Length 92mm