Plugging device drives the plug into the hole with a twist of the Allen wrench, plug then expands under pressure to fill the punctured area, a firm pull on the stem seats the mushroom head on the inner wall allowing no air to escape Revolutionary device easily installs mushroom-shaped rubber plugs into all tubeless tires on the wheel Kit includes: Plugging device Nozzle adapter Rasp tool Probe tool Retractable razor blade Allen wrench 15 - mushroom plugs (5/16" diameter x 3/4" long stem) [EU: 0,79 cm diameter x 1,91 cm long stem] Laminated instructions 4 - 16 g canisters of CO? gas 4" flexible adapter with solid brass fittings for the most effective repair possible without dismounting your tubeless tire 5" x 7-1/2" x 1" (EU: 12,7 cm x 19,05 cm x 25,4 mm) zippered pouch CO? cartridges cannot be transported on an aircraft.. POCKET TIRE PLUGGER W/CO2