I built a steady rest and that's what I used on the fingers, Works well. I know there are a lot of opinions on using rollers, bearings, for a steady rest. pros and cons. I've never had an issue of swarf getting between the rollers and the work. I had the cam followers but no bronze so that was my choice. I've seen Kurtis from Cutting Edge use masking tape to protect the bearings, and Adam Booth slip a ring of gasket paper for protection. The roller allows more pressure to be applied to the work.