Review on Precision-Cut with ABN Tungsten Carbide Router Bit: Unleash Your Woodworking Potential! by Robert Ryokan

I have used several attachments and am very happy with them. However, I am not satisfied with the 3/8" nozzle. At least the one I had anyway, both ears broke after the 3rd or 4th pass I think. Also make sure the bits match before use. The 1/4" shank was very difficult to fit into the collet of my Craftsman router, but it fit my other router, the Ryobi, like a glove. Maybe just a handyman.