"The Ken-Tool 3-bar passenger/light truck tire inflation cage is a must-have item for any shop working with tubeless and multi-piece rims. U.S.A. OSHA Approved Yes, Base L x W in. 21 1/2 x 22, Material Steel, Product Type Cage, Measures 30 in. from base to inside bend of cage, Bars qty. 3. Works with run-flat, low-profile and other tires that are difficult to seat Guards against blown lock rings and rims Made of heavy-gauge steel tubing welded to steel base"