Cut perfect holes in seconds for 3 gang sized new and old work electrical outlet boxes, low voltage boxes, mounting brackets, and cut-in rings. Guarantees your holes are the perfect size and shape every time so your boxes always fit perfectly and are easy to install. Compatible with over 35 different drywall cutout tools, spiral saws, and rotary tools. Easy to use – precisely guides the saw for you while cutting. Saves time and speeds installation.