Phenolic Canvas Wheels are industry standard performer. It is made from heavy weave canvas duck, impregnated with phenolic resin. It is molded under high pressure and temperature. Its hardness is comparable to polished maple flooring. It is used for smooth concrete or wood floors, and storage (standing) loads without permanent set. It rolls easily, quietly and protects the floor. It resists shock, water and oil. It has roller bearings.