A new approach: Wilson took a revolutionary approach to iron design, generating and comparing hundreds of D9 head shapes and Power Hole layouts in the ultimate pursuit of game-improving performance. Game-changing performance: Wilson D9 irons launch higher and spin lower while delivering incredible stopping power for pinpoint accuracy. More Speed. More Distance: The Wilson D9 irons feature strategically positioned, urethane-filled Power Holes which enable maximum face flex for improved speeds and an expanded sweet spot.Consistency equals confidence: Ultra-low centre of gravity locations increase launch angles and delivers a steeper angle of descent for better green-side control.