Features and Benefits:Kit contains 4 x 4oz Bags of ECO Balance Beads, 4 x Vortex Valve Cores, 4 x Green Valve CapsTPMS Friendly, Complete Axel End Balance, Extend Tire Life, Decrease Vibration, Balanced for the life of the tire, No Wheel Weights, Eco-Friendly.Once branded bag is opened, throw inside bag containing beads directly into the tire. It will break once the vehicle begins to move.Not for use with motorcycles.