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The Park Tool VP-1 comes with everything you need to repair a punctured inner tube and get it ready for reinstallation and inflation. Together with the included vulcanizing fluid the butyl patches create a molecular bond with the inner tube resulting in a durable permanent repair for any puncture. The application process is easy: simply spread a thin layer of vulcanizing fluid over the area allow it to dry remove the backing from the patch firmly apply pressure (especially at the edges) and inspect the bond after a minute or two. Compatible with nearly all bicycle inner tubes.