The one I bought would not begin to hold the drill bit/files. The pin vise or collet would not close enough to hold the largest diameter file because the shaft was not threaded far enough to draw the vise closed. This may be a matter of Chinese "quality control." Perhaps some of them work. The concept is good, the execution is horrible, or at least it was on the one I got.

I’ve actually bought a couple of these because I wanted something better for cleaning torch tips at the farm I work on. These are much better than the other style of tip cleaners. They work great for cleaning torch tips and are also fantastic for cleaning carburetors on small engines.