For shops with in-ground or above-the-floor vehicle hoists. Low height of 41-1/2" allows transmission to be rolled out from under bus or other vehicle's frame, a clearance problem with competitor's jacks. Metered, foot-operated air pump allows effortless lifting of the transmission into place, controlling the load precisely during removal and installation. Operation is twice as fast as competitive jacks powered by a hand pump, and it costs less. A dedicated adapter that fits the popular Allison 500 and 600 series automatic transmissions in included Safety bypass prevents damage caused by a system overload. Covered by OTC Lifetime Marathon Warranty.