I bought a used trailer a couple of years ago, that had Kwik Klamp system already installed. I had always had screw type tie downs before. I love these Kwik Klamps. I would highly recommend to anyone looking to change their tie down system. They are relatively inexpensive compared to other clamping systems. Around $65 each.
https://kwik-klamp.com
https://youtu.be/dYgLj09wR98
https://kwik-klamp.com
https://youtu.be/dYgLj09wR98