CUTzOUT PerfectHolez 4 X 4 Old Work Steel Switch Box Template Kit
This 5 piece kit comes complete with 4 templates and a SAWzBASE Attachment so you're ready to cut 1, 2, 3, and 4 gang sizes of perfect holes in seconds without mistakes and repairs for old work gangable steel switch boxes. The holes are exactly shaped so that the boxes will slide in. They even cut small notches so that the screws won't hit the material when you install the switch.