NEW Stop Go International Stop Go Pocket Tire Plugger. Easily installs mushroom-shaped rubber plugs into all tubeless tires on the wheel. Application : Tubeless Tire. Type : Tire. 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.