This is a plate to prevent scratches on the desk caused by the monitor arm's fixing hardware. 【Product Specifications】 Large plate: approximately 280*180*2mm (3mm including protective sheet), Small plate: approximately 245*145*2mm (3mm including protective sheet). Adding reinforcement plates in addition to just the monitor arm protects the desk surface and also reduces distortion, dents, and the monitor arm tilting forward or to the sides. 【Desk Protection】 By sandwiching this plate between the desk surface and the clamp when attaching the monitor arm, you can reduce warping and bending, allowing you to securely attach the arm. Clamping this base reinforcement plate together with the desk distributes the load. Using the reinforcement plate can reduce distortion and bending of the mounting area.