The Hi-Power 3500 Jack includes all the features of Barker's popular VIP 3500 Jack plus it is equipped with a precision ball screw and limit switch shutoff. This low-friction design provides up to 25% less amperage draw and gives more life to virtually all components. The special limit switch provides a silent shut-off in place of torque limiter at end of travel . Built-in level, Night Light, Emergency Crank-Thru Head, 2-1/4 Outer Post, 18" Travel, 1 year warranty, white/black.