IRWIN Unibit 3 -Piece Set 12 -Step Drill Bit Set ( 3/16-in to 7/8-in )

Too dull to drill anything.

The tips on these are pretty well completely dull. They won't make a dent in mild steel. Maybe on copper or aluminum they would work, but I have my doubts. There just isn't any bite to the tip. I have a 4 year old Dewalt step bit that has drilled hundreds of holes until the tip finally broke on it. I picked these up to finish a job and ended up having to drill a pilot hole with a Dewalt bit in order to get these to bite. The other flutes are equally dull, needing much more effort to push the bit...

Good product

Works great

Doll right on the pack

It was doll

5/10 Step bit

I bought this set to drill some holes in thin metal. Here is my experience. I first used the #1 bit. I tried to drill without using a center punch. It walked a lot. I used the center punch and nothing changed. The bit would actually walk out of the whole. I ended up having to use an actual drill bit to make a bigger indent so the step bit would not walk. The step bit took longer to drill than a wore about drill bit I've had for the last 5 years. I used the #4 drill bit and it was the same story....

junck

i drilled 11115 holes in a boat frame with harbor freight step bit, could Hardley drill 1 with these