The metallic gray lifting piston is a piece made of steel and plastic, finished in aluminum. Its function is to lift and contain the closet door. It has a bearing force of up to 8 kg and can be used for wooden doors and Aluminum. Must be used for module and door from 16 to 19mm thick and straight cup hinge with 15mm overlap. This system contains the closing of the door with its damping system. In the case of installing doors with a width greater than 450mm, the use of 2 shock absorbers is recommended. Each package contains a total of 20 units.