Rubber caster weels

Insert directly into carts or clothes Racks no bolts required...swivel casters have hardened double ball raceways..non marking and quiet..rolls easily on tile and linoleum..diameter size of the wheel..is 4" inches....capacity of each weel is 300 lbs..price is marked for each set of 4 wheels..each set includes 2 weels with integrated brake mechanism locks weels firmly in place