Review on 🔧 High-Quality 10PC Carbide Burr Set with 1/4" Shank - Tungsten Double Cut Rotary Die Grinder Bits - Cutting Burrs for Fordom and Die Grinder Accessories - Ideal for Wood Carving, Metal Working & Sturdy Storage Case by Robby Agrawal

Excellent carbide burs. Ideal for use on an electric straight grinder and chews through soft steel quicker than my more expensive albeit more worn drill bit. I think these burrs reach their optimum RPM at around 10 RPM when minimal force is required to cut effectively. This comes with different grinder shapes from ball, cylindrical and conical to different sizes. All in all a very convincing set at a reasonable price. I'm curious if they'll hold up for the next few years, but at less than $3 a ridge I'll be glad they hold up next year.