We have found the best prices on the Web, including prices on Northern Industrial Tools 20-Ton Air/Hydraulic Service Jack.
"Great for industrial use! Helps you repair trucks, trailers, farm equipment and more. Roll-about jack lifts a 44,000 lb. load from 10 inch H to 17 inch H. Requires 90-180 PSI. Jack measures 20 1/2 inch L x 13 inch W x 53 1/2 inch H."