Posted April 23, 200718 yr This may be old news for most of the members on the site, however there is no standard manufacturers flex ratings among the shafts. One manufacturers "R" could be anothers "A" or "S". The only true measure of course is the cpm machine. The shafts sold on this site come with the cpm measurement. However my reason for posting was to find out what unusual events have occurred taking the manufacturers label as gospel.
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