Review on 🔧 10-Piece Tungsten Carbide Double Cut Rotary Burr Set - 3mm (1/8") Shank, 6mm (1/4") Head Size (Style 1) by YXGOOD by Jim Agosta

This is a great buy for small rotary tools. I've used them on a few aluminum projects and some small cast iron port matching jobs. They'll gnaw through aluminum with minimal vibration and no noticeable wear after probably an hour of using multiple bits. The two tips I used for cast iron showed some wear after a few minutes, but nothing to slow down or change the bit's efficiency. If for the price I had to buy another set to do a second job (a port to fit a pair of V8 heads) that would be a decent expense. HIGHLY RECOMMENDED!