UK Drills TCT Tungsten Carbide Tipped Drill Bit for Hardened Steel, Security Plates and Locksmith Work, 5.0mm x 72mm

Bought this to drill an ER32collet chuck, that I was adapting to my lathe. Having ruined three HSS twist drills, I tried this. This drill performed faultlessly. I think that the people who suffered breakages, were not fully clued up in the correct usage of drill bits. Slow speed, gentle pressure and a bit of lubrication rule the day!

Used it to cut two holes in a sprung steel saw plate. (Making my own handsaw). Cut through cleanly with little burring. On a handcranked drill press too.

Great drill bit , drilled slate no problem, without breaking or splitting

I’ve purchased 3 TCT drills from this seller. 8, 9 & 12. They are all useless. A drill should CUT a hole these don’t. Just drilling 3mm free cutting mild steel sheet there’s no nice spiral of metal instead there’s just a load of chips liking like it’s rubbing through. The cutting edge angle looks more like a masonry drill than one for metal. I’d return them but for the postage cost.

Used to drill stainless steel and also a euro lock cylinder barrel pins. Worked very well

Bit warped while drill through 2mm light aluminium. Will not buy again

Very good at drilling through where cobalt drill bits cant, I did snap the carbide tip but it was my fault I would buy them again because they went through hardend locking nuts like butter just don't push on too hard and take your time and use cutting oil it helps very well

Ordered this 6mm and also a 3mm bit. Arrived as advertised but tried both on an A2 stainless bolt head and they hardly marked the surface. Considering these are sold as TCT bits I was very disappointed.