YAKAMOZ9pcs Machine Screw Tap Set Titanium Spiral Flute Drill Taps Metric M2 M2.5 M3 M4 M5 M6 M8 M10 M12 Thread Tapping Tool

Seems well made works just fine. no problems.

These have been great for tapping 3d printed parts and cleaning out already tapped holes. They work well in a drill motor, but they might not work great as hand taps. At this price point they really can't be beat.

Decent just delicate. Go easy you'll be fine

Bought these for my Dewalt battery powered drill. So far, no issues and the bits are still sharp after a dozen use on wood and dry wall.

I wanted some spiral flute metric taps for blind holes. They’re hard to find and when you do they cost a fortune. Like M6 from OSG IS ABOUT $38 bucks for one tap. But when I found this set it covered the range I mostly need. My first hole was a M6 x 1.0mm hole in low carbon 12L14. To my surprise it worked perfectly. I can’t say they’re the best looking grinds on the flutes, but it worked for 6 holes I needed to tap. Very pleased. I bought a second set just to have a back up. I would recommend getting them for occasional holes, maybe not for production though.

I like the different sizes bits and I used it on my car aluminum radiator to make perfect size hole for M8 bolt.

I was able to successfully tap a hole using the M8 tap. But on the second hole, the tap just snapped. I wasn't putting any sideways torque on it. I haven't used the other taps, but I guess you get what you pay for.

Works great, perfect tap. Make sure you drill a pilot hole of the correct size.I thought these would do the whole thing for me but they had absolutely no purchase on the aluminum bar I was working with. With a pilot hole though, it worked amazing and the screw fit very well.