Badger Air-Brush Co. 50-029 Spare Tire Adaptor Stock #50-029 Spare Tire Adaptor To use a spare tire for pressure, insert the adaptor into the propel regulator valve (# 50-200 sold separately) and attach to spare tire Tire must be on a rim and inflated to 40-pounds (2-3/4-bar) of air pressure Ideal for use as an alternative air source Proudly made in USA