Economy Light Medium Casters is ideal for food service, hospital equipment, laundries, dairies, furniture, appliances, and electronic cabinets . It features two ball bearing swivel raceways and ball bearings in wheels. It is made of cold rolled steel and embossed for added strength which handles loads from 100 - 1000 lbs. It has complete protective plastic with thread guards. It is zinc plated. Rigid caster is solid, riveted construction, and embossed for added strength.