6 Packs Combination Drill & Taps Bit Set, Screw Tapping in SAE Size 6-32nc 8-32nc 10-32nc 10-24nc 12-24nc 1/4-20nc with Anti-Rust Black Coating, 1/4” Hex Shank and Storage Case

I waited till I used these a few times before writing this review. I got a few sizes of these and they are all getting the same review. These were all used for drilling and threading narrow style aluminum door frames and 18ga steel doors. The bits were used with a Milwaukee hydraulic 1/4" impact drill/driver and Tap Magic cutting/tapping fluid. I have used many combination drill/taps in the past and I will be honest in saying that these have worked better and cleaner than the other drill/taps that I have used in the past. After multiple uses in 18ga steel the bits still performed very well and cut & threaded with very little effort. They went through the aluminum frames with ease. Sizes used were 8-32, 10-24 and 10-32. All held up well and drilled clean holes and tapped very nicely for the machine screw sizes they represented. It will take a while to use these up compared to the other brands I have used in the past, I will be buying these again.

It's a perfect set for my occasional needs.

The set came complete, the finish on the bits looks a bit suspect (black paint?) but they seem sharp enough, and for the money this looks like an OK deal if it works. And it mostly does/did.The first hole I tried was in 0.2" thick simple steel (a galvanized bracket) with the #12 NC bit, and it broke the moment it got halfway into the tapping operation. First hole, first pass, maybe the steel was a bit extra steely, but that was disappointing so there goes a star.Flip-side, I've now done about 40 holes into 1/4" thick brass with the 1/4" NC bit, and no issues although the bit is starting to get dull. Then again, fair enough after 40 holes, and impressive enough to not lose 2 stars over the #12 bit.The other disappointment (and the description was clear so no complaint there, just wish-it-would-have) is that in metric the set goes up to 10mm which is 0.4-ish inches, and in NC it only goes to 1/4" so a little over 6mm. Having 5/16" and 3/8" NC bits included would have made this a MUCH more useful set for me.

Complete garbage. Tapped an Aluminium extrusion, As soon as the first 2 threads hit when I went to reverse to clear out threads it broke.The second one I tapped a 3/4" MDF board. I got a couple holes tapped and then on clearing the threads backing it out from about half way through the board it snapped. It SNAPPED in MDF!! Wood! I have never in my life seen a tap snap in wood!This is why I am giving this item a garbage ZERO star review.I used a non impact driver or non hammer driver just a regular screw gun.

These are great drill/taps taped 8 holes on a mill in 1/2” aluminum had great luck nice threads. Everything‘s good. I would recommend this set..

These bits are just "ok" as far as practical functionality. The drill portion does not drill well, so you have to drill a "pilot hole" with a smaller drill, or you're wasting you time. You need to stop when the drill goes through the material, in my case, steel tubing. Then you need to put the bit into an actual tap holder designed for the purpose, or find a socket small enough to drive the bit. You can't just run it through with the drill, it will strip out. You can force it in with a ratchet wrench and oil...that's what I used, and I was able to cut threads and complete my project.

It's work great get it

Arrived on time....worked perfectly