Those are good. I was trying to confirm that the wheel does in fact rest on the flange of the spacer. The pictures seem to show that is the case. The measurements will be very helpful.
From what I can tell, it looks like the inside dimension of my wheel hub is about 4-3/8", but it also looks like there is a slight taper from the inside to the outside. I had originally thought the inside diameter was 4-5/8", but after a better measurement, it turns out I had read it wrong. That puts the delta at almost 1/4" instead of 1/8" and there's no way the spacers will fit... it's not even close.
Bro-Tek is telling me they should be the same as the B2320, but something is definitely off... or they have sent me the incorrect spacers twice now.
Thanks again!