Diablo Octane Fairway RH 5 wood Stiff Flex. Aggressive VFT Technology increases the size of the sweet spot and generates hotter ball speeds for longer distance Standard models have larger footprints with a higher MOI and a deep CG for better playability and higher trajectories. Tour models inspire confidence at address and are highly workable with low penetrating trajectories Stainless Steel clubhead is heat treated to enhance strength and produces a pleasing resonant sound at impact