This adjustable clamp will mount to tables or other surfaces with a maximum thickness of 2-3/4" (7cm). There is a 5/8 spud receiver on the plate opposite of the clamp that is 1.98" (50mm) long. The spud will allow the mounting of lights and other accessories. The aluminum base is 0.20" (0.5cm) thick with multiple 3/8" and 1/4" threaded holes for adding accessories and/or additional mounting points. The unit weights 2lbs (0.86kg).