1.RC tires are made of high quality materials. These tires are made up of rubber, nylon plastic and sponge foam rims imported from Southeast Asia. The tire sandwich is designed with a composite process embedded with hightoughness sponge rims, which largely inhibits the phenomenon of cake flinging. 2.The high toughness and high resilience sponge liner ensures the impact resistance of the tire as well as the overall application life of the tire, and the high purity rubber raw material comprehensively improves the friction of the tire. After upgrading the tires, the handling of the model car is more flexible and reliable, reducing sding and easily improving the top speed performance. 3.Easy to mount and dismount. Tire design is reasonable, perfect model matching, can directly replace the original parts, improve the performance of car tires. 17 mm hex drive perfect match, nondestructive installation, giving you greater control over your outdoor adventures. 4.Suitable for all 1/7 1/8 RC short track trucks,such as Traxxas UDR 850864 (Fitted with a set of output shaft washers)(Note: UDR with brake discs will rub against the inner diameter of the tires, it is recommended not to load brake discs.)/ARRMA Mojave EXB /YK4072 YK4073 DF7 /FS ATOM and other shorthaul trucks.