Quantity and Specifications: 4 furniture casters, you can choose according to your needs. Size: 2 inches. PREMIUM MATERIAL: Made of polypropylene (PP) and steel, it is lightweight and durable, moves quietly and smoothly, and is smooth and does not hurt the floor. EASY TO USE: The furniture replacement wheels are easy to remove and can be installed in a minute. The wheels with brakes will make little noise for your comfort life and won't scratch any hardwood floors. 360-degree rotation: Special design, 360-degree rotation, with brake function, start and stop at any time, no noise when rolling, no interference in work. Carrying capacity: 20-25KG per caster, suitable for shelves, storage racks, trolleys, various furniture, etc., also suitable for hard floors, wooden floors and other types of floors.