installation steps 1. Depending on the angle at which you need to open the door, measure the dimensions and draw the screw fixing position according to the manual. 2. Secure the connector to the threaded hole that is pulled out. 3. Then draw the screw fixing position of the other connector according to the size of the manual. 4. Secure the other connector to the threaded hole that is pulled out. 5. After the joint is fixed, connect the pneumatic rod to the joint. 6, buckle at both ends, you can install Material: cold rolled steel, damping, nylon film Comes with 5 screws See the map for a variety of apps. The support force of the support rod 80N is 8 kg, and the two support rods are 16 kg. One support rod 100N support force is 10kg, two support rods are 20kg One support 120N support force is 12kg, two support rods are 24kg The supporting force of the support rod 150N is 15 kg, and the two support rods are 30 kg.