1.Material:Iron 2.Transition: 1 cm = 10 mm = 0.39 inches 3.Diameter of hinge cup : 35mm 4. Design : Fix design cant take off the lowest plate as above . 5.Depending on the gentle and the screen, the color of the object could also be slightly assorted from the color of the picture. 6. Allow 0.5-2cm difference due to guide dimension Thickening adjustment screw Bold rivets for firm connection Silent hydraulic cylinder six power-assisted hands