The Pro XTREME is the most versatile edition with an ergonomic design that facilitates repairing a full range of punctures and especially those in the most heavy duty treads up to 1-1/8” thick. The substantial end cap has a broad flat surface that can even be tapped with a hammer to assist plug insertion. It has five machined compartments that store extra insertion tubes, air stopper and clearing tool. The Xtreme end cap threads are compatible with the Pro tool making the end caps are interchangeable. Available in 6061 aluminum or 303 stainless steel.