Material, study and , can be used for a longer time. Skid pad - effectively reduces the damage caused by collisions. Screw hole-can adjusted the height to install. Mounts under your desk to your platform. If youre looking for a keyboard slide for a custom desk, or you are replacing a worn out keyboard an old desk, this one is easy to install, and has flexibility in the mounting height. Note: It is normal for the product to have a slight paint peeling. Note:Due to different production batches, the color , which does not affect the use. Colour:Silver Material:steel Size:35x3.50x1.2cm Package Contents: 1 x 35Key Desk Keyboard Drawer Rail Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.