C-clamp

A C-clamp is a metal fastening device shaped like the letter C, with a screw mechanism that tightens against the open end to hold objects firmly in place.

Carpenters, metalworkers, and hobbyists use C-clamps to secure workpieces to benches or to press materials together while glue dries.

I need a couple of C-clamps to hold these boards while the adhesive sets.

The size of C-clamps varies from small ones for delicate work to heavy-duty versions for industrial applications.