OTC Air-Assisted 2,000 pounds Capacity High-Lift transmission jack for shops with in-ground or above-the-floor vehicle hoists. The low height of 41-1/2 inch allows transmission to be rolled out from under bus or other vehicle"s frame. A clearance problem with competitors" jacks. The metered, foot-operated air pump allows effortless lifting of the transmission into place, controlling the load precisely during removal and installation. The 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 is included. The safety bypass prevents damage caused by a system overload. It is covered by Lifetime Marathon Warranty.