Hidden Deck Fasteners for Composite Deck Boards, Includes Screws & Drill Bit (Stainless Steel, 0.255" Groove Height)

I spent hours researching and ordering like ten different hidden fasteners, because I didn't like the Trex hidden fastener, the gap was too large between the planks (3/16" to 1/4").So I tried out all the ones I bought and this Fruh one is hands down the best, sturdy, solid construction, easy to install, and the gap is half the size, about 1/8" (between 3-4mm) which looks so much nicer on my deck. No worries of kids fingers getting stuck or high heels tripping because of the gap. Water can still go down easily and the deck can breathe so mold won't grow (if there is no gap, then that could happen).I saved you a lot of time, trust me, if you are looking for a smaller gap than Trex, you found your fastener. Remember to choose the taller one for Trex, 8.5mm high fits the grooved edge perfectly.