Wolfride 4pcs Long Shank Tungsten Carbide Burr Set 6mm Shank Die Grinder Burr Set for Metal 6-Inch Length

Good overall, use then on my knife making projects..

I’ve only used on porting mostly aluminum some steel 2strokes for a couple hours but they don’t seem to be wearing at all yet. They can be cut a little shorter or you can hold the shaft with your callus or greased fingers. It will kinda bite and chatter or skip if you don’t hold it well a little closer to the burr. Good value same as eBay