TyreBeads Motorcycle Tire Balancing Beads 4 oz Kit + FREE Valve Core Tool + FREE Applicator Kit Includes 2 oz for front tire, 2 oz for back tire, valve core tool, and an applicator bottle and tube These are premium internal tire ceramic balancing beads. Reusable, super hard, durable, and eco-friendly - will not rust, clump, or melt Pour them in during mounting or apply through the stem. Good rule of thumb is 1 oz per 10-12 lbs of tire These work with tube type tires. Note: Depending on the size of your tires you may need a larger kit.