Alberth Aviation designed and manufactures the only proof-tested Tire Inflation Cage specifically for the aviation industry. This product conforms to all OSHA and military safety standards. A new larger model is now available for wheels with tire diameters up to 42 inches. Product details and testing videos are online at www.AlberthAviation.com. For over 20 years, Alberth Aviation has been designing and manufacturing select GSE and maintenance tooling for the aviation industry.