These are continuous, endless loops that arrive ready to install on your shade. The diameter of the cord is approximately 2.9mm. They work with many different brands of cellular honeycomb shades, including Bali, Graber, Rollease, and more. When determining the hanging length, measure how long you’d like the loop to hang down when it is installed in the shade and not broken like this:  These loops are suitable for cellular shades, pleated shades, honeycomb shades, Roman shades, soft shades, roller shades, and woven wood shades. They are compatible with Bali, Graber, Springs Window Fashions, and other brands. Available in multiple lengths in several colors to coordinate with your window coverings. Cord loop lengths may be +/- 1".  Sold individually.