Well, there are 3 to choose from.
1 – Krank Formula 11 PRO Driver (USGA CONFORMING)
*Rated For Average Drives of 260 Yards or Longer/Swing Speed Range: 105 mph & Higher
2 – Krank Formula 11 X High-COR Driver
*Rated For Average Drives between 200 and 260 Yards/Swing Speed Range 80-105 mph
3 – Krank Formula 11 XX Super High-COR Driver
*Rated For Average Drives of 200 Yards Or Less -Swing Speed 80 mph & Slower
I have included a video to explain the differences and to help you choose,
We have all three models in stock. We can provide the component head or custom build a driver for you.