Model 30 Swivel Casters are a step up from swivel caster model G15 in that it features larger swivel and wheel bearings and wider wheels.  The precision machined swivel provides superior performance on both manually moved and mechanically powered equipment.  The metal frames are zinc plated for rust resistance, and there are lubrication fittings for all moveable parts.  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.