About the characteristics of the shaft P1 type: Add a material with a low elastic modulus to a part of the material that produces hardness in the material composition to create a "sticky feeling" (torque value is set to a large value: torque value 4.0) (Design that emphasizes feeling without pursuing material performance) This is an unprecedented design.
◆Protostega
Mr. A, the leading carbon shaft developer and shaft designer Even with the same hardness and torque value as Mr. A's carbon shaft, the design that depends on the feel that differs depending on how the material is used is the know-how.
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