Screw Clamp With a Wide Range
The clamp tightens onto any flat surface from 2 to 38 mm thick, which covers thin shelves, keyboard trays and most desktops. A large thumbscrew means no wrench or screwdriver is needed, and rubber pads on both jaws protect the surface and help it hold with modest tightening. A groove in the jaw lets it grip a round pole as well as a flat edge, and one owner mounts his hooks sideways on desk poles to hang patch cords. Owners describe it staying put once tightened, with one noting it never loosens and another reporting a secure fit on a keyboard tray just over an inch thick. The limit is what sits under the edge. The lower jaw needs clear space directly below, so a desk with a lip, crossbar or drawer close to the front may leave nowhere to clamp. One owner found that true of most desks and tables in his home and uses shelving instead, so look under your desk before ordering.
