If you use the Lezyne Tubeless tire repair kits with tubeless plugs, your kit can be refreshed with this 10-pack refill Tubeless Plugs for the Tubeless Kit and Classic Tubeless Kit. The car tire type plug system has proven extremely effective, as you don't have to rely on sealant alone for an effective hole plugging. If you ride a lot in sharp rocks, desert environments or are simply overly aggressive, you likely use your tubeless kit more than others. Time to restock!