A two-piece clew board is used at the clew of a sail to add strength and provide attachment points. This item includes 2 plates and anodized aluminum rivets.

To Install: Place one side of the clew board so that it is 90 degrees to a line bisecting the clew angle. The two short edges should be flush or slightly (approx 1/16") inside the sail's leech and foot edges. 

Once the board is in position, mark all the holes. Cut all the holes with a hole cutter, a smaller cutter can be used multiple times to cut the larger holes. Sandwich the sail with the two halves of the clew board and attach with the included rivets. The aluminum rivets can be set with a deluxe snap fastener tool, standard snap fastener tool or even a center punch.

Remove the excess material extending beyond the clew board with a hotknife or utility knife.