Pull it out to 3/4 hole depth and remove the shavings, then refine the depth if you need a 7 1/2 hole depth, get the next bit size. I needed a 7.5 and bought a 7.5 but only 7 of these are good for drilling, I had to get the drill out of the chuck as much as possible while it was still stable. It worked, but it would be nice to have the following size