With this hardware, you can build a coffee table that converts to a dining table. Two hinged arms raise the table top and a user-made wooden support 16 1/4", allowing you to unfold an extension that effectively doubles the amount of usable surface.
Gas spring pistons slow the movement of the table top for smooth operation, and springs hold the mechanism in an open, rigid position. When folded, the mechanisms and secondary support are concealed in a recess as small as 27 1/2" square and 7" deep.
A square coffee table top with a maximum size of 37 3/4" × 37 3/4" is recommended for stability; this makes a table that unfolds to 75 1/2" × 37 3/4".
Made from steel with a black powder coat, the hardware can support up to 100kg (220 lb). Fasteners not included.