What is a crowbar

The utility model relates to a labor tool, which is widely used in the repair and maintenance of railway tracks. Since it also appeared in the game Half Life series and was used freely by the protagonist Gordon Freeman, it is also called the "Physics Sacred Sword" or the Origin Stick by netizens. The crowbar is a method that uses the lever principle to let the weight overcome the gravity, lift the weight from the ground and displace it. The crowbar is divided into hexagonal bar, round bar and flat bar. Hexagonal bars and round bars can be processed into: round at both ends, flat at both ends, or round at one end and flat at the other end. They can be used as construction tools or hardware tools, and the latter can be used as vehicle tools. The flat pry is divided into long and short thicknesses, and most of them are used as tire mending tools.