– Strongest 1″ casters in the market – Equipped with 360-degree swivel bracket, supporting smooth and silent rotation in any direction – Strong and durable heavy duty steel structure – Each caster can carry 30LBS(15Kg) – a total capacity of 120lbs (60Kg) for 4 caster wheels – Made of superior non-marking PVC – Strong abrasion, impact, and stain resistance – Plate Size: 1.5″x1.3″ (38mm x33mm) – Wide use from industrial, home, hospital, garage, etc