Many of these watch inserts come with a rubber ring around them instead of the usual mounting lugs. This 35mm nozzle is large enough to make it easy to attach the liner.
I had trouble centering it in my drill press due to the flat spot on the side of the drill. It was off-center initially, and I had to constantly rotate and tighten it in the chuck to get it centered. Too much force and it may slip and move again if the chuck is not tightened enough. Also, the shank is very short and I had trouble getting the chisel closer to my work with a bench drill with a light stop. A longer rod would certainly make things easier, but the real problem was the flat spot onβ¦