The ATD 16-pc Locking Wheel Nut Master Key Set, No. ATD-3065, is designed to easily remove locking lug nuts on aftermarket wheels. The thin wall sockets prevent damage to wheels while the extra-long lug keys keep the user's wrench away from the wheel to prevent nicks and scratches. The double hex head design fits most lug wrenches as well as 13/16" and 7/8" sockets. This set is made of heat-treated chrome vanadium steel construction and they have a durable black oxide finish.