Occasionally when stretching a cloth or gauze between two vertical wires it is preferable to use pulleys to run along the wires rather than gauze hanks.

This quiet, smooth running pulley has a removable clevis pins so it can be inserted onto made up wires.

Its weight and lack of friction helps the cloth fly in. The clevis pin can go straight through a well placed eyelet in the cloth, but if there are no eyelets, then why not take a look at Holdons and Spaniflex- the most useful adjustable bungee loops.