Product Description
- Length: 300 mm .
- Thickness: 3 mm.
- Type: Slotted.
- It obtain the high hardness and high torque to be more durable after the overall quenching.
- The head of screwdriver is more proper for the screw & obtain the maximal torsion after the precisely process.
- The material of shaft: chrome vanadium Nickel steel.
