Increases tire life and improves fuel economy. No more external weights. Reduced vibrations and heat build up. Tires are balanced all the time not just over 30 mph like other products. Guaranteed safe for all tire pressure monitoring systems (TPMS). Can be used in tubes and tubeless tires.. DIY kits include bead bags, applicator bottle with tube, valve core remover, valve caps and valve cores. Two 2 oz. and One 3oz. Pack