Quiet large diameter wheel that can be firmly fixed with suction cups on the back and anti-slip stand. No need to worry about turning noise even when running at night. Hedgehog Degooh It has a non-slip stand that prevents it from rattling and comes with a suction cup so it is safe to use even for glass harmony. Easy to clean wheels. It does not accumulate dirt easily, so it is easy to wipe clean at any time. Foot safety design. There are no seams on the wheels, so small feet and nails won't get caught. Comes with non-slip parts. Attach it to the stand to prevent wheel rattling and cover the surface of the installation and scratches. Comes with a suction cup on the back. Attaches to glass surfaces to prevent tilt and shock absorption Shaft screws that are easy to turn. The cap shape makes it easy to turn and remove wheels. Can also be attached to wire cages. Please do not use for creatures that have more than 17.6 oz (500 g). Product size (when assembled): (Wheel) Approx. Diameter 11.8 x Depth 6.3 inches (30.0 x 16.0 cm); (Including stand): Approx. Width 12.2 x Depth 8.7 x Height 14.2 inches (31.0 x 22.0 x 36.0 cm); Materials: PS, steel, ABS