Century's exclusive, patented CoPilot allows for anyone to easily enlarge existing holes in one easy cut. For use on every style and brand of threaded hole saw arbor. Use adapter nut to convert thread count from 1/2-20 to 5/8-18 when required.
Based on my experience, this hole saw is a game changer for cutting tasks. The CoPilot allows for easy and accurate drilling which saves time on the job. The durable build withstands heavy use in an Industrial and Scientific environment. The only downside is that it can be difficult to attach the saw to the drill.
Nothing special, works as it should. You screw the smaller hole saw up onto it, then the larger face piece. However, it only works with concentric holes. Doesn't provide what you need if your hole is off-center.
Pros
For use with threaded mounts for hole saws of all types and makes
Works well but too expensive for this length of metal rod thread On one End. The problem with this design is that the threaded section will only work with a 1/2"-20 hole saw mount and therefore will only work for 1-1/4" hole saws and smaller. For $22, you get very limited utility, so not a very good price. Better to buy a Bosch device.
Pros
Use an adapter nut to convert the thread count from 1/2-20 to 5/8-18 if needed