.Made of high hardness chrome molybdenum steel for durability 

.Lug nut remover kit includes 17mm, 19mm sockets; 

.1Pc 1/2"x7" Extension Bar; 

.1/2-inch square drive fits your wrench drives; 

.Set allows you to bite into and remove worn locking nuts to quickly dislodge them even when rusted, deformed, stripped, or broken