Review on Enhanced CSLU Thread Tool: High-Speed Steel with Titanium Coating by Mike Goodwin

Unfortunately the tap broke off the first hole. I bought another brand last week, it broke in the second hole. At first a hole worked like a charm. Since this vendor listed "high speed" in their description, I figured it could be made out of better quality steel. Vain. In both cases I used an HHS 5-M 08 mild steel tap. I used cutting fluid with a Milwaukee M12 drill driver. I don't know what I could have done differently to prevent a breakage. Like I said, great concept, it just doesn't seem to work in the real world. Maybe someone with less experience has better luck, but this 90-year-old retired electrical engineer and handyman couldn't get them to work as intended.