The Pro XTREME is the most versatile edition of the Dynaplug’s 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. The Xtreme end cap threads are compatible with the Pro tool making the end caps interchangeable. Engineered especially for repairing punctures in heavy duty tubeless tires for cars, trucks, ATV’s, campers, motor homes, RVs and tractors with a maximum tire thickness of 1-1/8" and a minimum thickness of 3/16" at the point of the puncture. Easy-to-use, neat and clean. No need for "reamers," messy glues or solvents. Just plug the tire and you’re ready to go.