New, unused, and unopened. Ships via Yu-Packet Post Mini. #Mini4WD #Tamiya #Tamiya The following is quoted from the Tamiya website: Low Friction Small Diameter Narrow Tires (24mm) & Carbon Reinforced Wheels (3-spoke) 15541 [Parts useful for improving machine performance and setting] A set of tires made of low-friction material and reinforced wheels. The 24mm small diameter tires, effective for speed adjustment and lowering the center of gravity, are made of synthetic rubber and feature low grip. You can enjoy setting them up by attaching them only to the front to improve cornering, or only to the rear to shorten the jump distance. The wheels are also less likely to deform and are a reinforced type with carbon fiber, making them less likely to bounce after jumps. Both the tires and wheels are unified in a sharp black color. [Basic Specifications] A set of small diameter low-height tires and wheels using low-friction tires for one machine. *Due to the hard tires, they must be pressed in firmly to install. [Usable Machines] Mini 4WD PRO with small diameter tires, various Mini 4WD cars (some chassis or bodies require processing) Low Friction Small Diameter Low Height Tires (26mm) & Carbon Reinforced Wheels (Fin) 15541 [Parts useful for improving machine performance and setting] A set of tires with even less grip than super hard tires and reinforced wheels with carbon fiber. The black tires can be attached to the front to improve the machine's turning ability, or attached to only one side to cancel out running resistance due to the difference in inner wheel speed by sliding, or attached only to the rear to reduce speed during jumps and prevent course out, allowing for various settings. Can be attached to Mini 4WD and Mini 4WD PRO models equipped with low-height tires. [Basic Specifications] Set of 4 tires and 4 wheels, tire outer diameter 26mm [Usable Machines] Mini 4WD PRO with small diameter tires, various Mini 4WD cars (some bodies require processing. Due to the hard tires, they must be pressed in firmly to install.)