Review on 🔧 YUFUTOL 5 Pcs Carbide Burrs Set for Aluminum - Extended 4.4" Long Reach Carbide Rotary Burr Files Set with 1/4 Inch Shank for Die Grinder Drill, Metal Carving, Polishing, Engraving, and Drilling by Jason Nguyen

Really good cutter set. I used them to relocate the intake manifold and cylinder head kit. Overall porting took about 8 hours and the bit I used still cut great at the end of the job. I only used three of the five bits that came with it, and unfortunately I bent one right away. I worked inside the inlet and the bit caught and hit the adjacent corner. Bent directly at the entry into the collet. It's probably my fault, but it's still a little frustrating. Also, I think an oval nozzle, meaning no sharp corners, would make more sense than a straight cylindrical nozzle, as the corners on the nozzle leave grooves in the workpiece, and they're also very easy to grip. and then you run the risk of bending the racquet. In any case, I was very satisfied with the way they worked.