Change A Tire on your vehicle Faster And Easier Your factory lug wrench, because of its short length, just doesn't have the leverage needed to "break" loose your lug nuts when you need it most! Imagine yourself on the side of the road , late at night, in the worst neighborhood; you want results to fix your flat fast. The Gorilla Power Wrench extends to a whopping 21" (above right) to multiply your leverage so you don't need to be a gorilla in case of a flat tire emergency! Collapses to 12" long (above left) for storage in its own carrying case. This 1/2" drive lug wrench comes with two flip sockets to fit 17mm, 19mm, 13/16" and 7/8" lug nuts. It's a small price to pay for peace of mind.