The robust Xtreme is an all-round great tool with a large end cap engineered especially for repairing punctures in heavy duty tubeless tires but outstanding for all tubeless tires. Like the other Pro series tools, the Xtreme kit includes tool, 8 repair plugs, 3 insertion tubes, 1 air stopper, 1 clearing attachment and 1 pipe cleaner. The Pro Xtreme AL weighs 4 ounces, so still light weight with a large-surface end cap that can be an advantage. Extra features are storage slots machined in the tool body and replaceable insertion tubes. The tool comes with the manufacturer's limited lifetime warranty. The Dynaplug solution is designed to repair a punctured tire in just a few minutes without taking the tire off the wheel. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.