This is remix of Nigeke | Printables.com model. He already has 40mm version of this remix. However after I printed the 25mm version, I didn't realise that that it had a hole for the marble to fall through :-(.

So this remix removes the hole, so it can act as a catcher for different types of funnels, I like to use in my tracks. I've added photos of the model by itself and how I intended to use it. It has the same dimensions as standard Gravitrax spacers and column.