Mobile Playground Constant Duty OBA is powered by a pair of 380C pewter compressors, operates from a 1.5 gallon tank at 200PSI and is capable of inflating tires up to 40”. VIAIR’s Toy hauler OBA’s are powerful systems capable of fast tire inflation and many other pneumatic tasks. Featuring dual compressors, extension hoses and different size tanks to meet spacing needs, these kits are a must for anyone hauling long trailers in need of serviceable air.