INVISI-FAST IF-BSNMB-500 Hidden Deck Fastner Invisi-Fast NMB is designed for TimberTech, Veranda, Moisture Shield, Monarch, and Fiberon Also works with standard biscuit jointer slot and router Works with all boards with at least 1/8-Inch groove in deckboard. Provides a 5/32 Spacing between deck Covers 300 square feet 500 Piece kit includes: 500 Biscuit fasteners, 500 Fastener screws, and 1 driver bit