
All 3 of my bits were too big for the 1/4" quick release. I was able to adjust it to about 1/8". I was in a dilemma so I tried it and it couldn't even open the hole before it started to burn. When I looked again at the attachment, it had gone a little deeper into the shaft, but still not far enough to snap in. It was so tight that I had to use other tools to remove it. I then checked the other 2 bits and encountered the same problem. All 3 went in the trash. Don't waste money.