Allows you to easily and clearly see displays/lights/dials on equipment without meddling fingers adjusting settings. Use with security bits if you want to make it even more secure. Also great that you can remove the plexi glass panel if required. Product also provides some protection from damaging dials (less likely to be snapped off). We cut a couple of sections with a jig-saw out to allow customers to change some limited settings (faders) which works well, provided you are careful not to snap the plastic (go slowly). All in all a good product which is just what we needed, well done!