It is a 3d printable gear sphere (ball). Suggest using resin material when printing. The diameter is appr. 34 mm. Files: https://www.cgtrader.com/3d-print-models/games-toys/toys/sphere-gear-t20d34 https://cults3d.com/en/3d-model/gadget/sphere-gear-ball-gear-t20d34 https://www.etsy.com/listing/955581629/3d-printable-sphere-shape-bevel-gear-set?ref=shop_home_active_1 You can download the free 3D PDF file here: https://www.tanerxun.com/simple-bevel-gear-examples/.html
