Park Tool Vulcanizing Patch Kit: Display Box with 36 Individual KitsPark Tool Vulcanizing Patch Kit: Display Box with 36 Individual Kits. 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