The Tour AD IZ is a very close match to the classic, Tour AD TP. I see a slightly softer butt and a slightly stiffer tip. This is seen the the tip/butt ratios. They are lower, and generally that indicates slightly lower launch. These two shafts are very close in profile to the Graphite Design Tour AD-DI. The difference between the TP and the IZ are subtle.The midsection of the EI curves are identical. The butt of the IZ is softer and the tip stiffer. The butt to tip ratio changes by 4% indicating a slightly lower launching version of the TP. The differences are so slight that I expect they will be seen only in players with very repeatable swings.
Tour AD IZ, like the Tour AD TP, utilizes TORAYCA ® T1100G carbon-fiber pre-preg with NANOALLOY ® technology in the tip section of the shaft. Also like the TP, it is made with 50 ton ultra-premium, high modulus, aerospace quality carbon fiber materials.
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