IRWIN Bottoming Tap, #6-48NS (1221)

Worked perfect....for those that dont know use your drill press manually to thread your hole right after you drill it..once you reach how far you want unchuck the tap and back it outby hand to make sure you feel that it threaded good and comes out with ease. I bought three taps afraid they would break but using above method kept that from happening. Will probably rust away before I ever get to second one.

This was a used tap that had been modified and wire-brushed. The end was ground off, it still had metal shavings and gunk on it, and it was not an Irwin brand product. It looks like someone is buying used/surplus tooling and selling it as new on Amazon. I only have two holes to tap and I dont have time to wait on a replacement. I guess Ill deal with it.

Great

A good quality tap, does the job effectively. But, the bottoming taps Im used to are completely flat at the end with the cutting edges all the way to the end, this is not. This is more like a plug tap than a bottoming tap. Still works, but be aware of that.

This was a six-pack of taps, but I only needed one of them to tap eight 6-48 holes for two receiver-mounted picatinny rails. Worked great, I have no complaints, and have zero hesitation recommending this product for those who need one. Good Luck!

Seems well made, but did not use, since appeared would have enlarged threads for Savage 12 FV scope bases too much, and ended up not even having to chase threads in order to mount Warne 7666-20MOA picatinny rail.

Cut threads without any issues. Would recommend as a purchase.

Worked as advertised

Worked very well tapping a barrel for a bead sight!

this should work I will let you know.