Plews 14-401 Foil Back Patch Kit Tru-Flate Foil-Back Tube and Tire Repair Patches ensure the repair gets done right For use on tubes and tires where fabric reinforcement is not required; most commonly used for patching bike tubes When patching a tire, always prep the surface with a liquid buffer/cleaner then rough up the surface with a manual or rotary buffer; a thoroughly prepared surface ensures patch adhesion and safety 1-1/2 inch, foil backed, round patches Box of 20 patches