The Cal-Van Tools 5-pc Lug & Lock Flip Socket Set, No. 96100, features sockets designed with six fluted twists for gripping damaged lug nuts. The flip socket on the opposite end has 12 fluted twists for wheel locks, and all of the set's flip sockets have a 1/2" drive design. The set includes a 7/8" Lug & Lock Flip Socket, a 21mm Lug & Lock Flip Socket, a 19mm-3/4" Lug & Lock Flip Socket, a 17mm Lug & Lock Flip Socket, and a 1/2" drive 3" extension bar.