This is a pneumatic tool for quick and easy installation of tubeless tires on wheel rims. It is suitable for tires up to 24.5 inches in diameter on all vehicles. It has a sturdy powder coated steel body for durability and reliability. It has a pressure gauge on the body for easy pressure monitoring. Recommended working pressure is 87-120 lbs. Refills from a standard compressor in an auto repair shop. The metal cylinder has a specially designed tip shape that allows the powerful air jet to be directed precisely between the tire and rim at the perfect angle.