Of Amish design... Also known as the Quacker Clamp or Duck Bill. This clamp is ideal for positioning foam core or bead board.
MPR Says: "Bead board saver"
"If you've ever tried to secure a piece of bead board with a c-stand alone, you quickly realize the usefulness of this clamp. the wide surface area of the clamp preserves the integrity of the foam material and can be easily positioned by way of its attached baby pin."