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

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.

Hard size to find 6-48 Needed a bottom tap to clean up some holes on a gun barrel for mounting a scope. Worked perfect!

Probably due to my own inexperience with using items like this but the tap would constantly slip from the handle I was using, warped and then finally snapped. Part of the tap I suppose is forever in my rifle now which is unfortunate.

Great quality and it works perfectly!

This tap worked as expected the first time, although it will not see frequent use in my shop. It did the job just fine so l am pleased with the results. I have no complaints.

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.

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

Worked very well tapping a barrel for a bead sight!

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!

The IRWIN Bottoming Tap, #6-48NS (1221) is just what the gunsmith ordered. Save yourself a bit if hassle and get the one that comes with the correct drill bit.