The file 'A4 Mallard Flanged Driver 3D Printer Model' is (stl) file type, size is 168.6KB.
This is a 54.85mm(61.6mm at the flange) driving wheel based off the A4 Mallard. The axle needs to be filed a bit and the round hole widened with a 3/16 drill bit or possibly 4.8mm. The v3 model has the spokes extending to the back of the hub and might print cleaner.
v2_a4_mallard_driver_flange.stl | 309.8KB | |
v3_a4_mallard_driver_flange.stl | 304.5KB |