Ko-ken RS3025/8-L100RH 3/8 Sq. Dr. 8 Piece Round Shank Tamper-Resistant TORX® Bit Socket Set (T20H-T55H). TORX® is renowned for its ability to transfer greater torque, reduce load, and nearly eliminate tool slippage, making it one of the most effective fastening systems. This set features tamper-resistant TORX® bits, d 3/8 Sq. Dr. 8 Piece Round Shank Tamper-Resistant TORX® Bit Socket set T20H-T55H