Estompen, paper wiper, 5 pieces, diameter: 12mm + 4-6-8-10 (Office supplies & stationery)
One can something even selbs tinkering, but the result is, at least for me, not to the quality sieses sets tuned. Very useful when blurring. As already mentioned earlier, the pins can very well maintain with sandpaper. I use hither only one with 60 g