Model 50 swivel casters and rigid casters utilize the same caster wheels shown in plate caster model 30. However, plate caster model 50 has a larger mounting plate and thicker legs. This allows for heavier loads and more arduous service. The precision machined swivel bearing provides superior performance on both manually moved and mechanically powered equipment. Popular options include a face contact wheel brake to lock the wheels, and a hand operated swivel lock that converts a swivel caster into a rigid caster for direct line travel. There are lubrication fittings for all moveable parts, and the metal frames are zinc plated for rust resistance.