FEATURES Perfect casters replacement for your wire rack shelving units. Also It can make your workbench, freezer, grill, fire pit, cooler, washer, dryer,grinder/ drill press stand, compressoror any other gadget you need move easily and roll smoothly, which save your labor and time. SPECIFICATIONS - Overall Height: Approx. 65mm - Wheel Diameter: Approx. 45mm - Tyre Width: Approx. 20mm - Wheel Type: PU PACKAGE INCLUDE - 4pcs SERVICE CART WHEEL SET