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: 1/4" Drive Shape: Hex Length: 25mm Type: Tamper-Resistant TORX® Bit Output Size: T30H Product Dimension (Refer Line Drawing I 1/4 Hex Dr. Tamper-Resistant TORX® T30H Bit - Length 25mm