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.

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..

They're more than a tad brittle but at the price it's an acceptable trade off. Just don't drop them

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.

It's a perfect set for my occasional needs.

It's work great get it

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.

Great price for the setThey seem to be very good qualityBe sure to use them on slow speed and don't force themThey did a great job for us but the key is slow and steady