2Pcs Thickened Cold Rolled Steel Computer Desk Keyboard Slide Rail Bracket(white) Features: 1. Screw hole-can adjusted the height to install 2. Solid ball - smoother, more balance and quiet 3. Slip pad - effectively reduces the damage caused by switch collisions 4.  material - study ans durable 5. Multi-layer plating - the polishing plating of surface has good oxidation resistance, is not easy to rust, beautiful and practical   Specification: Condition: Material: Cold Rolled Steel Optional Color: White, Black Size: Approx. 356 x 32.5mm / 14.0 x 1.3in   Package List: 2 * Keyboard Rails 1 Set of Screws   Note: Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.