Steelex D2615 Polyurethane Caster, 4-Inch, Swivel
These casters feature a polyurethane wheel molded to a polypropylene hub with an oil-less bearing. They are excellent for a wide variety of applications where quiet operation, high wear factor and high corrosion resistance are a concern. These 4-inch swivel casters have a M12-1.75 x 26mm stud and 275 lb. capacity.