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: 32mm Type: TORX Socket Output Size: E4 Product Dimension (Refer Line Drawing Image): D1 Size 3/8 Sq. Dr. Impact TORX® E4 Socket - Length 32mm