Review on 🔩 Drill America DEWCSK1 1/4 90 Center: Versatile and Reliable Drill for Precise and Effortless Drilling by John Clark

This is a high speed steel so it dulls faster than carbide when used on wood (or sheet metal which I wouldn't recommend). However, I bought this to get a perfect 60 degree internal bevel on a piece of PTFE tubing for a 3D printer and for that it works great and can last forever. Cutting PTFE will never dull this tip, so it belongs in the toolbox and will be used for a long time.