Self-propelled Model GS-5390 RT comes standard with positive traction-controlled 4-wheel drive. If one tire loses traction at any speed, others will not lose power. Operator easily maintains speed control with 3 throttle modes. Hydraul-ic lift raises 1,500 lb as high as 59 ft. Joystick controlled brakes hold on any grade, prevent freewheeling down inclines, and assure smooth stop. Diamond plate aluminum platform comes with 5 ft front extension deck and optional 4 ft rear extension. Rear platform railing is removable for loading/unloading.