Telescopic Hydraulic Cylinder provided by our company, works with compressed air to actuate the piston in one direction and spring force to return to the base position. This cylinder only extends by pressure from a pump and then retracts by the weight of the load or by an inbuilt spring. Telescopic Hydraulic Cylinder is simpler, so there is less to maintain. This cylinder is very cost effective and easy to install. This cylinder requires very low maintenance and replacement costs.