A hooked or curved steel bar that used as an tool to open locked, closed or other inaccessible object, usually crates or doors made of wood or metal, or demolish items and structure, like sledgehammer. it has two flat claws on both ends to pry the object open, its "teeth" the gap on the claw of its hooked end (hooked end is also known as the crowbar "heel") is used as an physical space for prying nail out of wooden plank.
