The only 40-ft full drive height unit in its class, the Genie® GS™-4069 RT rough terrain scissor lift features four-wheel drive and positive traction control, offering up to 40% gradeability when driving on slopes — making it ideal for use on demanding outdoor worksites. Overview: Front active oscillating axle keeps all four wheels on the ground during operation, Proportional lift and drive, 800-lb (363 kg) capacity, Foam-filled, rough-terrain tires.