High speed air turbo motor US patent number: 5 341 723 is equipped to raise the load to the desired height efficiently effortlessly and safely A built-in bypass device protects hydraulic system from over pumping damage US patent number: 5 946 914 Sturdy one piece handle assembly with fingertip remote control for handle with your choice of 3 handle angles 90-degrees 45-degrees or 0-degree for easy access Large steel and rubber wheels for easy positioning and smooth motion User friendly self-returning spring minimizes operators effort greatly reducing fatigue