FEATURES Diamana TB-Series shafts are designed explicitly to maximize this process. Through a new Consistent Feel Design Diamana TB-Series feature minimal variance in butt OD, weight and balance point through the entire range - from 40R2 to 80TX. This minimizes any change in feel as a player shifts among options, allowing a fitter to focus on finding the ideal weight/flex pairing for maximum performance. Constructed using a new dual-phase Mitsubishi Chemical [#371 resin system] that produces a carbon-rich structure that is both universally stronger and more responsive. 80% less variance in Butt OD for entire series 60% less variance in weight between flexes 70% of SKUs within 0.10mm Butt OD & 75% within 0.25mm Balance point within 2% for entire series, 1% for each weight