The Vulcanizing Patch Kit includes six thin and flexible patches with tapered edges to blend perfectly with the profile of the inner tubeFour round patches are 25 mm in diameter for smaller holesTwo oval patches, 25 mm x 35 mm, are for wider cutsA tube of self-vulcanizing fluid chemically bonds the patch to the tube for a permanent repairEach kit is packaged in a small plastic box with sandpaper for cleaning the tube and instructions