I think it is more of a naming scheme rather than having a real difference. the variance though is more towards quality control. with regards to a cf infused kielwood, I'm still doubtful on how much better or different it is compared to a regular cf shaft. there are just too many variable to consider that affects deflection and each test that I have seen while interesting, find it not that absolute and are just basing it on estimation. maybe a computer or robot performing the test would make a more feasible result. I haven't seen companies do these tests yet to convince me on how different they are using the same technology. just their word and marketing that this shaft is $200 better than the other. it would just depend on the consumer if they like the product better than the other and willing to spend more on it.Catalin has a point that Pure X's description of the CF inside as carbon fiber materials sounds as if it could be practically nothing (see their website descriptions at end of post). Google AI, however, claims carbon fiber materials are used in shafts like Revo while carbon fiber tube is used in cheaper CF shafts:
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