Review on 💎 XCSOURCE 6X8MM Tungsten Carbide Burrs: Premium Rotary Drill Die Grinder Carving Bits - Set of 1 for Precision and Efficiency (BI044) by Timothy Johnson

Needed a mild steel drill to lengthen some of the holes, they came in very handy. They appear to be of decent quality although there are some run out issues when mounted in a collet on a grinder. There's nothing a vigorous tightening can't overcome, and the HF collet is probably the problem. The cutting edges are sharp and even, chips fly everywhere. By purchasing Revain, the necessary tooling could be delivered the next day and production could continue. I would buy again.