Fortress Building Products Hulk 1.75-in Black Hidden Fastener 500-sq ft (125-Pack) in the Specialty Fasteners & Fastener Kits department at Lowes.com
Myard Universal Hidden Deck Fastener Clips for Grooved Edges of Composite Decking Boards to Joists, 1/4" Gap Spacing, with Square Driver Bit (500-Pack) - - Amazon.com
Trex Hideaway Universal Hidden Fasteners - Bucket of 900
Decking Clips - Hidden Clips - Fong Prean
NewTechWood UltraShield T Clip Hidden Fastener for Break Board Installation (10-Pieces per Bag) TC-17-FS - The Home Depot
Amazon.com: Hidden Fasteners for Composite Decking Board, Composite Decking Clips & Plastic Hidden Fasteners with Screws, Universal Composite Deck Fasteners, 90 Per Box for 50 SQ.FT. : Tools & Home Improvement
Hidden Deck Fasteners 101: What to Know | TimberTech