Good performance: It uses the pressure difference generated by the cross section of the piston rod to achieve the movement of the piston rod, which can support, cushion, brake, adjust the height and adjust the angle. 2X Shock Absorber Support Rod for Car Lift Gas Spring Lifting Storage Bed Pneumatic Support Hydraulic Rod Universal Shock Absorber 58cm 580mm 750N Automotive hydraulic rod generates force by compressing gas in the cylinder, so every time you open and close, it becomes easy, convenient and safe. This car mount spring rod is made of steel with flexible rubber material, which is quite stiff and highly elastic, not easy to deform or bend, stable structure, high load-bearing, absolutely rust-proof, durable and can be used for a long time. Strength is ensured by powder-coated cylinders and specially treated piston rod surfaces and a controlled lifting speed. No more falling or hitting your head. Shock absorbers to assist the trunk lift help hold the trunk when you try to get