Yea, it's an 1/8" there too. It's an 1/8" almost all the way to the top of the brass tube. I can fit an 1/8" bit up to about a 1/4" from the top. So in other words, the bit fits in the tube and then stops about 1/4" from going all the way through the tube. They also have EGN needles. So they're useless on gas. That sucks, I guess I'll sell them. I got a decent deal on them so if I can get what I paid for the I'll be satisfied. Thanks a lot for your help man!