Features and Benefits:Kit contains 4 x 8oz Bags of ECO Balance Beads, 4 x Vortex Valve Cores, 4 x Green Valve Caps, 1 x Airless Injector Bottle and Tube (Valve Cores and Caps are packed in each bag, not packaged separately)Extend Tire Life, Increase Fuel Economy, Lifetime Balance, Perfect Smooth Ride, Decrease Road and Tire VibrationNOT FOR USE IN MOTORCYCLESTPMS Friendly, Complete Axel End Balance, Extend Tire Life, Decrease Vibration, Balanced for the life of the tire, No Wheel Weights, Eco-Friendly.