Drill & Tap Bits Set of 13 pcs - 6 SAE Sizes: 6-32NC to 1/4-20NC, 6 Metric Sizes: M3 to M10 and a Quick-Change Adapter – Combine Drilling Tapping Threading Countersinking Functions in One Bit, Black

Worked with a screw in the throttle plate of a carburetor for 2 weeks. Along comes this tool . Put it in my cordless drill and it worked like butter . Could not be more please with the results. It drills the screw out and cleans the threads after it all in one pass.

fantastic, only wish the size rage was increased so that there were more in larger and smaller ranges.

Do not purchase this item. I tried to use one to tap a hole in a 3/16" aluminum frame. I predrilled a pilot hole and used cutting oil. The first one I used broke before even getting to to Tap threads. The second one I used broke a little further down (not much) but got stuck in the hole. Wasted too much time trying to get it out. I threw the rest away in the garbage. It might be good for wood or plastic but who taps wood?

For wood working greatFor metal okA few drills was one and done

Built 2 of these Chinese clutch paddles 325.25 splines up side down triangle tungsten pretty alien triangle anyway super powers china's clutch shoes every one all purchase they just don't show that 1 lol temporary all must slave it for that set screws I make 3 out of the cheap ass paddles I dave theor Chinese best 2screw paddles yes 2 red shoes company Chinese real Amazon's are not fake when all donmy job here whenever you get the other real ones pull out your slave paddles

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.

I should have read the description better. These are not steel and were subject to binding and breakage - I had to finish my job with steel after the first three of these snapped while adding the threads

I’m an electrician and have been using these for about 2 years now. They still work and the drill tips are sharp. Great kit and way cheaper than Klein or greenlee!!

I don't usually leave Amazon reviews but I was surprised with these thread cutters and did the job that was required of them. AOK so it was a plastic screw that had sheared off on my roof rack mounting but I managed to drill it out then use the required drill/ tap on both of the sheared plastic protectors as they had never been used in donkeys, and it managed to rescue the bolt hole recess and be able to fit middle bar of roof rack...Don't know what it would be like if it was steel though 🤓👍👍

A utiliser avec huile de coupe, ils sont fragile

A nice easy set up

Those break very easily.

It snapped after one use on a small peice of aluminium