1 Stainless steel powder metallurgy gearbox, all metal gears made by powder metallurgy die casting, high precision, low noise, high hardness, good resistance to pressure. 2 Built-in limit switch, the telescopic rod will automatically stop when it reaches the apex to protect the safe operation of the motor. 3 6 kinds of connectors are available, please note the following serial number when placing an order. If you have any questions regarding your order, please contact customer services.USA, Canada, United Kingdom, Austrilia, France, Germany, Spain, Ireland, Italy, Other E. USA, Canada, United Kingdom, Austrilia, France, Germany, Spain, Ireland, Italy. Please make sure it is correct. This item is in the category "Business, Office & Industrial\Industrial Automation & Motion Controls\Rotary & Linear Motion\Linear Actuators". The seller is "shinedeerdirect2018" and is located in this country: CN. This item can be shipped worldwide.