Vaydeer Ergonomics Desk Extender Tray Clamp On Keyboard Drawer Table Mount Armrest Shelf Stand Slide Computer Elbow Arm Support Price: $49.69 (as of 05/05/2021 20:56 PST- Details) & FREE Shipping.

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【Horizontal alignment desk extender】 No need use it under the desk tray ,it is comfortable to rest your arm and keyboard and mouse,would be more comfortable for typing.
【Ergonomic table extender space saver】 you can folds to hide under desk when not in use to save the space, the large and wide tray it measures 25.2” x 9.5”,it can be with more space when you use the extender tray.