Tubeless tires are a wonderful thing. If you run over a thorn, the sealant inside your tires will just seal up the hole. However, sometimes you can run over something large enough and your sealant won't plug the hole. The Ryder Slug Plug Tire Plug Kit is pre-loadable and seals to keep dust and debris out which prevents plug contamination. It features a Presta valve remover and a stainless steel needle.