Casters Improve Mobility Bed casters or bed frame wheels make the moving or shifting of beds effortless. These durable bed casters have a load capacity up to 110 pounds each. Come in brown polypropylene wheels, with a yellow zinc finish. For added security and stability, these casters feature a side brake. Dimensions These rug savers are designed for use with bed frames. They have a 2" x 2-1/4" Yellow Zinc Caster, with a 3/8" x 1-9/16" Grip Neck socket stem. Wheels are brown. Plastic Plug Inserts Plastic Plug Inserts are optionally available by selecting them at the right. These plastic inserts are made to be inserted in your bed frame to facilitate the correct fit for your casters. The price of the plastic inserts will be automatically discounted in the cart if purchased together with these wheels. Sold Singly These casters are priced "each", so a quantity of 2 will yield two casters.