4" Gray Rubber Swivel Caster, Plate Mount with Double Lock
These casters feature a soft gray rubber wheel molded to a polypropylene hub with an oil-less bearing. They are excellent for institutional applications because they are extremely quiet, will not mar floors and provide excellent control and safety with a double braking system. They are also low maintenance and have a tread design which offers good traction on wet floors. These 4" swivel double locking casters have a 3" x 3" plate and 175 lbs. capacity.