Cut precision inside and outside diameter holes. Great for cutting woofer holes, small circles, and giant arcs from 1” all the way up to 30”. Machined from 1/2” aircraft grade 6061 billet aluminum.
 
Compatible with the mounting pattern on Porter Cable 650 and 890 series routers.
 
 
How to Videos:
- How to Use the Perfect Circle - By CarAudioFabrication