Challenger's 7,500 lb. capacity rolling jack for 4015 series four post automotive lifts features air/hydraulic operation and includes (4) 3" stack adapters. Broaden your service revenue with easy access to brakes and wheels from underneath four post lifts. 7,500 lb. capacity rolling jacks feature adjustable width, low vehicle drive-over clearance, stackable height extensions with built-in storage rack and protected filter lubricator and regular.  Cal us for your shipping quote today!