All keys are manufactured from fully hardened Chrome Vanadium Steel. Overall surface heat treatment, precision bite non-slip design, torque, strong grip, durable. Satin finish surface for corrosion resist.
Hexagon Design: Hexagon flat face chamfering fine, work flat, so that the wrench completely fits the bolt hole. Uniform torque force improves efficiency.
Plastic clip design: Easy to use. Every wrench is fixed so there is no scattered mess.