UST Mamiya 460/470 ZT9 Graphite Iron Shafts Features: Designed with ZT9® material which provides better elongation of material to increase the damping rate, producing better impact strength and better feel on mishits. Recoil Technology provides optimal spring effect in the walls of the shaft and more energy transfer to the ball for increased velocity and distance. Ion Plating finish provides a stunning and premium finish vs. traditional paint. .355" taper tip options available via special order - please call 800 848-8358 Trimming Instructions