atent-pending CAMO Marksman Pro positions CAMO edge fasteners for side-angle entry to the deckboard to create a fastener-free deck surface, Automatic 3/16 inch spacing, Fits any 5-1/4 inch to 5-3/4 inch deckboards, Dual screw guides fasten both sides of board with single tool placement, Clamping action grips the deckboard