Fafeicy Plastic Motor Gears, 26 Piece Plastic Spindle Worm Gear Sleeves Kit 2 mm/2.3 mm/3 mm/3.17 mm/4 mm for All Types of DIY Cars, Robots, Model Making Accessories : Amazon.de: Toys
0,5 Modul Schneckenrad Schneckenwelle, Zahnwellen 40 Zähne -Zahnrad | eBay