Graphite Design's unique technologies - Material Stiffness Integration and GD Flex control - with weight classes to provide golfers of all skill levels with added distance and accuracy. MSI refers to the unique materials developed by Graphite Design that enhance the performance and feel of the shafts. GD Flex ensures the performance bend characteristics of each shaft throughout its length. (.335" tip) Bend Point: YS-5+ (Low/Mid); YS-6+ (Mid); YS-7+ (Mid/High); YS-9.1+ (Mid)
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