Yiguo 12 Spoke Plastic Wheel Rim and Black High Grip Rubber Tire for RC 1:8 Off-Road Car Set of 4 Suitable for RC 1:8 Off Road Car. Tires are made of rubber with sponge inside, wheel rims are made of plastic, perfect replacement Plastic 12 Spoke Wheel Rim with 17mm Drive Hex. Material: Rubber/Plastic Note: The tire is not glued on rim, you can split it. If you want higher performance, please glue them well before using them.