Available in 12 single-wheel models, the casters are versatile for applications requiring dependable performance combined with design style. They are available with a fully-enclosed, positive mechanical brake and locking system for when all casters in a combination set need to be locked simultaneously. Featuring soft, streamlined contours, casters are constructed of lightweight, pressure-diecast aluminum shells and are engineered to provide perfect tracking down long corridors. The locking system uses complementary metal teeth on the wheel hub and swivel pin and does not cause the wear on brake pads and tire surfaces common to conventional friction brakes. Casters are available in four total lock and eight total and directional lock models with load capacities ranging from 198 to 330 lbs.