Ninja Hidden Deck Clips Grip-Rite Ninja Hidden Deck Clips fit any Trex, Fiberon, or Wolf grooved composite or pvc deck board. No more guessing which hidden deck clip fits best. Each Ninja Clip features a compression fit lever that holds the clip securely in the groove. Ninja Clips will stay where you place them, & consistently give your deck boards a perfect gap. Great for installing 45 Degree decking. Grip-Rite says the Ninja Clips install 31% Faster than the competition. Pre-installed PrimeGuard Max 316 Grade SS Screws with black oxide coating for superior corrosion protection. Grip-Rite Ninja Hidden Deck Clips: Designed Specifically For Trex, Fiberon, & Wolf Grooved Decking Available In 50 SQFT Boxes Or 500 SQFT Tubs 50 SQFT Box Contains 90 Ninja Clips 500 SQFT Tub Contains 900 Ninja Clips Compression Fit Lever Hold Clip In Place Grip-Bite Serrated Teeth Lock Deck Boards Securely In Place Consistent Gap Through Out PrimeGuard Max-Coated 316 Grade Stainless Steel Screws For Corrosion Resistance Screws Pre-Inserted In Clips Each Pack Includes T15 Driver Bit Limited Lifetime Warranty Ninja Clip Installation Instructions