1. Uses aluminum alloy precesion die-cast body for excellent quality and Worry-free application
2. Uses advanced and durable gasket, with oil leak rate lower than 1/1000
3. Perfect matching between transmitted piston and gear, with special high intension material to ensure closer to work durable, quite and high efficient
4. Quality carbon steel is used piston structure
5. To allow stable transmission&quiet can be installed on left/right hand door, without adjustment
6. With two indepedent adjustable valves, which can be adjusted closing range at 120, -15 and 15, -0