When a puncture occurs, Slime's patented sealant is carried directly to the damaged area. The pressure of the escaping air forces the particles into the opening, where they build up and intertwine to form a long-lasting, flexible plug. Instantly, air loss is blocked and a flat tire is prevented. Install in your bicycles, dirt bikes, wheelbarrows, riding mowers and more and enjoy two years of continuous flat tire protection. Includes a valve core removal tool and a rubber tube to connect the Slime container to the opened tire valve.