Different Nitto B123s?
 

What's the difference between alloy, cro-moly, and steel Nittos? They seemed to all be priced around the same.

alloy are aluminum. They weigh much less, but some people don't like them for obvious reasons.

i'd guess he means what the difference is between the different metals, if the reasons were so obvious he wouldn't ask, they weigh less but they are stiffer, the "cro mo" ones are technically steel, i'm not sure the difference of those listed