The ESCO Pro Series Bottle Jack Line is designed for rigorous heavy duty commercial applications and range in sizes from 12 to 30-ton capacities. The bottle jacks are equipped with a re-engineered thick base plate, offering a stronger foundation to support heavy loads. They feature fully welded cylinders and frames, as well as have a compact footprint. Their double-spring design allows for controlled and safe descent while releasing pressure from the cylinder. All four bottle jacks operate using air or can be manually adjusted with the included two-piece lifting/lowering handle. Each jack has a 4' swivel-end hose with a handheld push-bar air trigger.