This is a set of hubs for use with Panzer Art resin wheels.  These allow the wheels to be fitted to Italeri CCKW kits 201, 205, 271.  The kit wheels are too small and oddly-shaped so need replaced.  The Panzer Art wheels look great but lack the necessary hubs to fit the model.

Note the four rear hubs have a set of six holes to accommodate the cast-in wheel nuts on the PA wheels, as it is difficult to get access to shave the nuts off.  (PA uses the same wheels for inner and outer, whereas the real ones had nuts only on the outer wheel.)

The hubs are cored for Italeri wheels with 2.1mm diameter axles.  Tamiya and Hobbyboss wheels are fine as they are, but if you really want to replace them just drill out the mounting holes in the backs with a 3.2mm (1/8") drill.