This is a cleaner for the k1 nozzle which uses the Bambu lab silicone cleaner, you need to remove 2 screws for it to work and then add them back once you place this. I made this one 5 mm and 10 mm longer choose the one you prefer, because that was all that I needed for the nozzle to hit it dead center and clean properly.
The author remixed this model.
I made it stick out a little more from the z axis screw so that it would match up with the factory position for the cleaner as it was missing on mine with the original.