Buy Now Keeps Bed caster wheels and furniture legs from damaging Floor Surfaces. Recommended for Castor Wheels 50mm (2″) to 56mm (2-1/4″) diameter and up to 57mm (2-1/4″) wide Unique O’ring design disperses weight evenly over a larger area and keeps legs and wheels from moving These Chocolate Coloured Fibre Glass filled Polypropylene plastic Cups makes them indestructible. Package contains 4 cups and supports 775 lbs (350kg) per cup
