Patent-pending CAMO Marksman Pro positions CAMO edge fasteners for side-angle entry to the deckboard to create a fastener-free deck surface Dual screw guides fasten both sides of board with single tool placement Clamping action grips the deckboard Heavy-duty, contractor-grade tool Pro Guide For use when installing composite and PVC decking, but can also be used on hardwood and cedar Fits any 5-1/4 in. (133mm) to 5-3/4 in. (146mm) deck board and creates automatic 3/16 in. (5mm) spacing Pro-X1 Guide For use when installing treated lumber Fits any 5-1/4 in. (133mm) to 5-3/4 in. (146mm) deck board and creates automatic 1/16 in. (1.58mm) spacing Pro-NB Guide For use when installing any narrow board—treated lumber, cedar, hardwood, composite, and PVC Fits any 3-1/4 in. (83mm) to 5 in. (127mm) deck board and creates automatic 3/16 in. (5mm) spacing