Phenolic bumper
I bought a phenolic bumper some time ago and ended up with one that was way too short and couldn’t use it on my cue. The seller realized later he made a mistake and sent me a longer one at no charge.
In the meantime I took an old rubber bumper and cut it in half, put it in first and then the short phenolic bumper on top and screwed it in. Works and feels better than a solid phenolic set up. Still has a little vibration dampening due to the rubber but the cue hits and plays more like a one piece cue.
I just could not get used to just the solid phenolic bumper but this is a nice compromise.