Used to vertically attach a 1" x 8" fiberglass flagpole to the dock pole. Simply place a few pieces in a row to achieve the required strength. In strong winds, the 3x5 flag bends the mast like a fishing rod. Stainless steel clamps hold tight. They are very thin and flexible. You get 20 per box at a fraction of the price of the heavier stainless steel staples.