Proto® J4990-10M-TT Standard Length Tether-Ready Socket Bit, Metric, 10 mm Bit, 3/8 in Square Drive, 1-5/8 in

• Manufactured with four detent holes so the pin detent will engage correctly regardless of the direction the socket is placed on the square drive
• The positive control system requires a separate tool to attach or remove the socket, meaning it cannot be removed without specific intent
• Made using a heat-treated alloy for wear resistance which helps minimize distortion for a long-life
• Hex opening holds the bit allowing the bit holder to take the torque load
• Chrome finish is applied after the holes are bored for better corrosion resistance

For stubborn or damaged fasteners and also on fasteners made from soft materials

Warranty: Lifetime

Proto® Socket Bit | Standard Length Tether-Ready | Measurement System Metric | 3/8 in Drive | Square Drive | 10 mm Bit | Hex Bit | 1-5/8 in Bit Length | 2-23/32 in Overall Length | Alloy Steel | Full Polished Chrome | STA-BLKHAW