Stainless Steel Tire Balancing Beads - 4 bags of 5 oz (20 total) fits 4 tires + 4 FREE Filtered Cores Includes 4 bags of 5 oz each (20 oz total) + 4 FREE Filtered Cores + 4 FREE Caps These are premium internal tire stainless steel balancing beads. They won't clog air valves and are not effected by static cling Reusable, super hard, durable, and eco-friendly - will not rust, clump, or melt. These are 2-3 times the size of most beads on the market. They are also denser than other beads so you don't need as much by volume.