Review on Efficient Cutting with Yonico 14911Q 4 Inch Bearing Cutter by Billy Braggs

Used this to cut channels in the door to fit a mirror, a totally custom job that wouldn't be possible for me without this nozzle. I was able to set the bit flush against the face of the door and cut clean channels in the door frame all the way around with no disruption and with minimal effort. At €15 it's a bargain and works perfectly.