Kutzall are the best and they have some of the best aggressive and thin ridges in probably 10 different styles/shapes. Personally, I really like regular conical drills and flame drills. I haven't tried any of their extra aggressive Extreme bits, but the regular ones cut enough wood that I can only imagine how well the Extreme bits work. The only negative I have to say about them is that they are quite expensive for a single burr. They have a 5% discount code but it only works if you order directly from the company. I couldn't get it to work on Revain. Will definitely buy them again when they wear out, just wish they were a little cheaper that's all. That's really the only negative thing I can say about them. They are definitely durable and won't break you.
Carbide Tungsten Double Rotary Grinder Cutting Tools and Cutting Burrs
4 Review
Kutzall Original Cylinder Rotary Burr, 1β8" Shaft, Fine - Woodworking Attachment For Dremel, Foredom, DeWalt, Milwaukee. Abrasive Tungsten Carbide, 1β4" (6.3Mm) Dia. X 1β2" (12.7Mm) Length, C-14-EG
9 Review
Kutzall Original Cylinder Rotary Burr, 1β8" Shaft, Fine - Woodworking Attachment For Dremel, Foredom, DeWalt, Milwaukee. Abrasive Tungsten Carbide, 1β8" (3.1Mm) Dia. X 7β8" (22.2Mm) Length, C-18-EG
5 Review
Kutzall Extreme Cylinder Burr - Very Coarse Woodworking Abrasive Tungsten Carbide For Dremel, Foredom, DeWalt & Milwaukee
5 Review