All of our glue nozzles are made to last, with basic maintenance. To adjust the diameter of your edge nozzle, use an Allen wrench on the opposing end to the edge guide to widen or tighten the diameter which glue will be spread along. To get the most out of your nozzles, keep the nozzle immersed in the water reservoir between uses during your glue work. After the job is completed, be sure to flush the nozzle of any remaining glue with water- use our Tap Adapter which works with all of our nozzles for the best results. For a full description of how to get the most out of your Pizzi glue system, consult our maintenance guide.