The revolutionary patented design of the Kwik Grip will hold any rope up to 1/2" without hassle. Perfect for use on anchor or mooring lines, deck or dock lines, deck accessories and fenders. To use, simply insert the rope anywhere along the length and give it a quick tug to secure. It can even be done with one hand. The spring-loaded cam lock holds the rope securely with a heavier load being held with a tighter grip. Per 2.