LEGO Technic - 5 x 20T Bevel Gear - New - Tan - (32198, Mindstorms) | eBay
Gobricks GDS-1104 Technical, Gear 20 Tooth Bevel Compatible with Lego 32198 All Major Brick Brands Toys Building Blocks Technical Parts Assembles DIY (1 White (090), 16 Pieces): Amazon.de: Toys
20T Tooth Metal Bevel Gear compatible with Lego Technic like 32198 – Metal Technic Parts