Nite Ize CamJam SlideLock Bungee Cord Tightener - Features Pull-to-Tighten Lock & Quick-Release Lever - 280 lb Working Load Limit & 840 lb Break Strength - Fits Sizes 2–5mm - Aluminium - Small

I don’t have those. I do have a quick deploy ridgeline that has these on both ends for backpacking in adverse weather. https://a.co/d/0bXEKoml Definitely recommend them for ease of use, practical build. And good quality.