Bolt-hole casters can be attached to racks, carts, furniture, and other equipment with compatible lag bolts or expanding stems, allowing users to choose the mounting option that best suits the equipment. The casters allow the equipment to roll, which reduces the effort required to move or reposition it. Also known as hollow-kingpin casters, bolt-hole casters can be used as an alternative to stem casters in light-duty to medium-duty applications.