![Why Drill Metal with Annular Cutter (Mag Drill Bits) in Magnetic Drill? Why Drill Metal with Annular Cutter (Mag Drill Bits) in Magnetic Drill?](https://3keego.sharkcdn.io/blog/thumb_500square_8423c46d396cb24cc2ca353bd81508d78ff80775.jpg)
Why Drill Metal with Annular Cutter (Mag Drill Bits) in Magnetic Drill?
Since an annular cutter removes only the material at the periphery of the hole, it is 3 to 4 times faster than twist drill bit. Besides, an annular cutter with pilot pin can finish a hole by one operation without pre-drilling for a pilot hole.