The Callaway X Hot Pro Driver is a 440 cc driver and is designed with a slightly lower and forward CG combared to the X Hot Driver. It also features a slightly heavier overall weight than the X Hot Driver and features adjustability and forgiveness to deliver hotter ball speeds and powerful ball flights for maximum distance. This driver features Optifit technology which allows the golfer to adjust the face angle to Open Square or Closed positions. The Speed Frame Technology combines VFT and Hyperbolic face technologies to create a larger sweet spot and increases ball speed across the entire face for longer more consistent distance. The New Ultra Thin Wall Casting Technology is the thinnest casting technology ever and creates a lighter overall weight for increased distance.