This broke 10x faster than an Autozone tap, which says a lot. It only has 2 flutes and the cross sectional width at the tip is about 1/8”.It broke instantly. I've never quite seen anything quite like it. I got less than a quarter turn into cutting, maybe 5ft/lbs of torque and it snapped. I don't know how you could tap anything made of steel with this. The company is called “Drill America” but its certainly not made in the U.S. Luckily, it was so brittle that I was easily able to punch the fragments out of the hole with a proper piece of tool steel. Buyer beware.
Rating: [5 of 5 Stars!]