Yiguo 17mm Hex Plastic 5 Holes Wheel Rim and Diamond Arrow Pattern Tires for RC 1:8 Off Road RC Car Black set of 4 Suitable for RC 1:8 Off Road Car. Tyres are made of rubber with sponge inside, wheel rims are made of plastic, perfect replacement 112mm OD Black High Grip Rubber Tyre Plastic 5 Holes Wheel Rim with 17mm Drive Hex. Notes: The tire is not glued on rim, you can split it. If you want higher performance, please glue them well before using them