Sturdy C-Clamps -- Attach the keyboard tray or any extension board to your workstation with sturdy C-clamps that hold everything tightly in place and are easily adjustable for user convenience.The sponge pads help to avoid causing any damage to your desk (1.9" Maximum Desk Thickness). NOTE: before purchasing, please make sure that your desktop does not exceed 1.9" in thickness. Foldable Design to Maximize Desk Space -- 90° foldable storage design enable you can just slide in the keyboard tray under the desktop instead of placing it on the desk while not in use, saving valuable space on your workstation. NOTE: Please check whether the desk type is suitable before purchasing. High Load-bearing Capacity -- Reinforced and thickened K-shaped alloy movable bracket, which is conforming to the mechanical structure, can hold up to 661lbs. This multi-purpose desk arm tray bracket can serve for arm rest, shelf, desktop extension board, computer mouse pad and equipment support, etc. Easy and Fast Installation -- The desktop bracket is pre-assembled. In most cases, all that you need is to tighten the four screws which only takes a minute before it is ready for use. The manual knob supports fast installation and disassembly, realizing multi scene conversion and use. Non-hole installation ensures that the desktop is undamaged. We've Got You Covered -- This package includes 2 support brackets, 2 C-clamps with padding, and mounting hardware, as well as friendly tech support to help with any questions or concerns. 1 Set Desk Extender Clamp for DIY Custom Wooden Desk Extender Board (Board not Included), Punch-Free Computer Keyboard Tray Bracket for Home Office

Characteristics:
- Adjustable screw design, the clamp can mount on different thickness table wall folding table.
- Punch free design, just clamp on tabletop and tighten, will not damage the desktop folding shelf brackets.
- One key to fold, comfortable to hold, easy to place, will not crack collapsible shelves.
- Simple in structure, easy to use, not easy to deform, you can use it with confidence.
- 90 degree folding storage, not taking up much space, strong bearing and not coming off.
- No need to punch holes on the desktop, without any tools, suitable for desktop computer tables, dining tables, desktop extensions, etc. This support bracket allowing users to set extension board up wherever they need it.

Package List:
2 x brackets
2 x clamps
8 x screws