Efficiently Tackle Hard Metal Projects With Aiyun'S 6-Pack Metric Drill Tap Set For Steel And Aluminum Review

Was working on a project and broke a bolt for the bumper assembly on my van. I had to drill out what was left of the bolt and as a result needed to retap the threads so I could put it all back together. That's where these bits come in. These bits are beyond awesome. After 20 to 30 minutes of slow drilling they not only cleaned out the hole but also left perfect threads for the replacement bolt. Very happy with these bits they got the job done and done right. After use there is visible ware on…

The 8Mx1.25 bit worked for me and got the job done. Best $12.99 I could have spent to drill and tap my damaged threads on the vehicle. I took my time (by hand) to slowly let the bit do its job. When the bit got snug, I worked the bit back and forth to loosen and shavings out of the way. After getting through, I backed out the bit without a problem. I chased the threads with a matching thread bolt and then then with the replacement automotive part.The thread tap portion of the bit had two spots…

using the M6 bit to tap the extruded center holes on 2040 aluminum t-slot rails. successfully threaded 4 holes. mid way through the 5th hole I bent down to pick something up off the floor and bumped the tap handle. I didn't whack it with a sledge hammer or lean on it with my entire body weight. just gently bumped it with my well padded shoulder and the bit snapped. I was using cutting oil if that should make any difference. sorry about the poor image quality but you can see this product is…

I'm an industrial maintenance tech, and these are supposed to be the stronger drill/tap bits but the first time I used this one in being aluminum this is what happened. It broke right in half. This is the second set of these I've had the first set was for thinner metals well they broke right off of course. This is the second set it's supposed to be heavier duty for thicker steel. Yeah right won't even stand up to less than 1/8 of an inch thick aluminum. JUNK!

Good cutting but breaks easily. Good product for the money. Will continue to use for small ventures. i''m pretty sure these things are supposed to last a little longer than this did!

As soon as it drilled through the metal and I tried to reverse the bit, it broke off. Twice! Heartbreaking. Thanks for attention.

Of the two bits used so far, both bits broke on the first use without finishing the job, not very durable. Ineffective for Heavy-Duty Projects: The set is not suitable for heavy-duty projects that require more powerful and versatile tools.

Used to tap 6mm threads on 10 ga mild steel and got one hole threaded using slightly larger bit first. Bit snapped on second hole using smaller guide hole and the bit on this for sizing. Didn't make it past the 3rd thread using my Ryobi drill on slow speed setting and clutch set at 50%.

The M6X1 bit snapped under light pressure using my 12v drill. I started to drill a hole and was reversing the bit after it turned a little when it snapped. I was trying to be careful and used lubrication.

I used this tool to make 4 threaded holes in a 4040 aluminum extrusion for a 3D printer project. I had good pilot holes already, and the threads were very easy to make. Worked great!

The came as they were supposed to. Worked as they were supposed to. The small ones did break after about three or four uses in 1/16th mild steel.

The m3 makes a hole larger than needed and the m5 broke on the second hole and yes appropriate speed and cutting fluid where used.

I was really disappointed in these as when I used one, the very first time, it snapped off inside the piece I was trying to drill through, completely ruining the piece as well. The drill bit is lodged in so tightly it is impossible to remove without tearing apart the piece it is in. I’m really disappointed

Great deal for the price and they worked great for drilling through a tractor I have at home! Great Value for the price! When the package arrived via USPS there were no drill bits included. Just a small plastic case.

used the new bit to drill one pilot hole in a piece of teak prior to screwing on another piece.When I went to screw in a second pilot hole and the bit cut partway in then turned freely in the base, when I tried to reverse the bit out of the hole the base came off the bit and we had to remove the bit from the wood with a small channel lock plier.These things are nothing more than junk. I would not recommend the purchase of them to anyone, whether friend or enemy.

Used for less than a month and two of them have broken. I have messaged the seller twice about this and have not seen any response. I would buy from somewhere else who will back their product.