Gas springs are a proven and reliable method of counterbalancing objects. They are ideal for safely, smoothly and quietly lifting and lowering cabinet lids and flaps. The gas spring is a hydropneumatic adjusting element consisting of a pressure tube, a piston rod and piston that is filled with compressed nitrogen. It comes in two styles: a lid stay for lift up lids and a damper for pull down flaps. Have a different mounting application for the Stabilus flap and lid stays? Three different brackets are in stock.