Callaway has redesigned this iron from the ground up, with an innovative A.I. face architecture and all new forged hollow body construction. Any scratch or single digit handicapper who wants speed and forgiveness in a players performance iron needs to try the Apex Pro 21. Callaway A.I. designed Flash Face Cup is in a forged Apex Pro Irons for the first time ever. Stock shaft: True Temper Elevate ETS. Stock grip: Golf Pride Z Grip Soft.