Yes, best way to tell is the shaft profile as supreme and vapor uses different shaft profile.
Prostocks are usually "made better" with new technology. Ie S17 prostock is identical to S19 retail stock, they tested the S19 first as a S17 for the pros.
In easton's case, all pro stock are made in Mexico, all non pro stock are made in China. So if you buy a easton pro stock from the states and brings it over, its duty free due to the NAFTA.
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