This Semi-Trailer Pneumatic Landing Gear Lift System (called On-Lift), which replaces the hand crank, is reportedly capable of raising and lowering a 60,000-pound trailer in less than 10 seconds. The air power is delivered from the rig's emergency brake system, so no other auxiliary power is needed. Bolted to the trailer's frame, the system's control unit (weighing about 10 pounds) is designed to operate consistently under severe weather conditions in both high and low temperature extremes.