Oban - Isawa Gold Autoflex The PowerCore designation refers to

The PowerCore designation refers to UST Mamiya's proprietary core construction technology that reinforces the shaft's inner structure to improve torsional stability

If distance and feel are both priorities

Crafted from soft carbon steel with a refined cavity design that balances playability with workability

The blue designation within the Shogun family identifies a specific launch and spin profile that positions this shaft as a mid-launch

producing more consistent launch conditions and face angle accuracy than lower-stability shafts deliver at equivalent swing speeds

Oban - Isawa Gold Autoflex The PowerCore designation refers toThe Oban Isawa Gold is a premium aftermarket driver shaft from OBAN Golf's Isawa series, engineered with the Gold specific construction to deliver a mid launch profile with a smooth, refined feel through the hitting zone and controlled spin characteristics suited to serious players who want OBAN's engineering quality and distinctive feel character in a broadly applicable driver shaft profile. Built from high modulus carbon fiber using OBAN's precision