6-Piece HSS Combination Tap and Drill Bit Set, 1/4" Hex Shank, BSW

Works great with 1/4 hex impact driver, can use with use a drill press or handheld one with a slip clutch, but as the torque will cause a twist with your hand and break the hardened bit if you aren’t careful

I am very happy with this tap set so far. I specifically bought this set in order to get the 2 smallest sizes in the set. Do at your own risk. I saw a video online where a machinist took a small tap and threaded the spring hole on a lower receiver, cut down his rear takedown pin spring to compensate for the allen type set screw length, and he successfully eliminated the need to "smash" the rear takedown pin spring against the stock or sling plate. I have done 2 myself, and I can tell you it has worked great. I put this combination 1/8" - 40 NS drill/tap into a hand "dogbone" ratchet and took my time, making sure to back out the shavings every few 16ths. It came out beautifully. Now I only need to remove the set screw in the event I want to dismantle the rear takedown for some reason, and now I can switch stocks at my leisure without having to worry about losing the spring or smashing/kinking the spring. I also really like not having to hunt for the proper drill size in order to tap. In addition, I also really like having the quick-change ends so these can be used in a hand ratchet, a mini impact, or a cordless drill.

My first tapping experience. I thought it was going to be difficult, but these bits made it simple. Just go slow and easy when drilling and backing out of the hole. Threads that were created are clean and secure.

They do fine with 1" or less material. However, if more material you will run out of room. I gave it 5 stars because they do work. Just be aware of their limitations.

These bits are a fantastic idea. The smaller sizes break very easily. The 1/4" broke while taping steel by hand. I drilled the hole with a drill but did not want to break another with the drill whilst tapping. It still broke and got stuck in the steel. Again fantastic idea but need to be built stronger.

First, being only a garage wood hobbyist, my experience depth is shallow. I was looking for a creative way to attach metal legs to a live edge table I had just finished. While think I just didn't think using a screw was going to give me the holding power I would need. I found these online and tried a few scrap pieces first. My method was to drill a small hole first, then using the tap and only go in. I removed the drill and used a small wrench to slowly back out the tap. I was concerned I might strip the hole reversing the drill. Since this time, I have done several other jobs and will probably look to this, instead of thru bolts or screws.

The 3/8 was hard to drill, (dulled after 1 minute) finally drilled with another drill bit. The threader finally cut through but on my second hole the drill bit dulled out and broke. The biggest one barely drilled and threaded 1 hole before failure. I'm guessing these are for very thin or weak plate material. Next time I'll buy name brand at a dependable national store

I have used tap and dye products before and couldn't believe there's one product that does it all. The product is phenomenal. It worked exactly as I was hoping for. The only warning is to watch for your desired depth may not thread deep enough for what you're looking for, but for me, it was perfect.

Funcionan excelente, facilitan mucho el trabajo y la rosca es muy fácil de hacer

0 Stars. tool snapped within first few mins of use.. money wasted. experienced at using tap/dies; this one is garbage.

They are very practical for drilling the proper size holes for threaded fasteners.

👍

I am pleased with the for the price.