Instantly lock and one hand to open.
Made of high quality aluminum alloy material.
The high strength carabiner clips is waterproof, rustproof, and wear resistant.
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.