This is a replacement stick of AKA Racing Wheel Balancing Clay, intended for use with the AKA Hand Held 1/8 Off-Road Wheel Balancer (AKA44001). This generous stick of clay measures five inches long and one inch wide and high. Used in conjunction with the AKA Wheel Balancer, a little piece of this malleable clay can be positioned on the high spots within your R/C wheel to provide the perfect rotating balance. This clay can also be used with nearly any wheel balancer, for nearly an R/C wheel; off-road or on-road.