Adapter for 48 mm (https://www.ebay.com/itm/48mm-Omni-Wheel-With-Hub-For-DIY-Arduino-Robot-Competition-Supporting-LEGO/192003283102) or 58 mm (https://www.ebay.com/itm/58mm-Omni-Wheel-With-Hubs-For-DIY-Arduino-Robot-Competition-Car-Supporting-LEGO/191998627541) omniwheel by Nexus Robot to 4 mm D-shaped axle. I also attached Fusion 360 and Prusa-slicer file.

Print instructions

Resolution: 0.2 mm
Infill: 100%