The kit combines the company’s Pocket Tire Plugger, an American made air compressor, and an Accu-Gage precision tire air pressure gauge. This new device easily installs mushroom shaped rubber plugs into all tubeless tires while staying on the wheel. The Plugging device 'drives' the plug into the hole with a turning of the hex wrench. The plug expands under pressure to fill the punctured area. A pull on the stem with the included pliers seats the mushroom head on the inner wall allowing no air to escape. This tubeless tire repair kit gives you all the necessary hand tools and (15) mushroom shaped rubber plugs to make effective repairs on your vehicle.