FEATURES Twin wheels allow for more surface area in contact with the floor and move in opposite directions to minimize carpet fiber twisting, commonly found on RTA furniture, office chairs and entertainment centers. SPECIFICATIONS - Castor Type: Swivel - Load Capacity of Each: 30 Kg - Wheel Material: PVC - Wheel Bearing Type: Plain - Frame Finish: Black Plastic - Wheel Diameter: 50mm - Overall Height: 70mm - Axle Type: Internal PACKAGE INCLUDE - 4pcs 50mm Furniture Caster wth Screw