This is a premium stick of Racing Wheel Balancing Clay, intended for use with tire balancing equipment to balance new (or used) tires prior to use. Use with TTP Tire Balancer by clicking HERE or from JConcepts by clicking HERE. A balanced tire assists in keeping the tires evenly in contact with the ground. An unbalanced tires masks car handling problems as well as puts extra strain on the drivetrain; make sure your tires are balanced before troubleshooting handling problems. This generous stick of clay measures five inches long and one inch wide and high; about 2.5 ounces of quality compound. Used in conjunction with any RC tire balancing tool, 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 for any car class in 1/10th or 1/8th classes in onroad, offroad, and oval racing.