Ipe Clip Hidden Deck Fastener EXTREMEKD Black (1050 ct.) features an integrated 1/4" spacer leg which automatically sets consistent deck board gaps for a smooth, fastener-free surface with no visible screw heads. #8x2” Black T15 stainless steel screws included, this biscuit-style hidden deck clip system is an edge-mount hidden fastener designed for grooved deck boards. It’s ideal for anyone seeking dependable grooved deck board clips and faster deck fastener installation. Engineered for kiln-dried 5/4 (15/16") and 1x (3/4") boards, it works with hardwood decking (Ipe, Cumaru, Tigerwood, Garapa, Teak), thermally modified wood, composite decking, and PVC decking. A durable polyethylene body with a stainless steel insert delivers up to 3× hold-down strength versus typical edge clips (installation dependent). The unique 45° angled screw drives through the clip into the joist to pin boards tight while allowing the opposite edge to expand and contract naturally, reducing cupping, movement, and screw pop-ups, making this hidden deck fastener clip a professional choice for residential or commercial decks.