MHI TDO5 TDO5H 14b, 16g, 18g, 20g Turbine Wheel Shaft 9 Blade TDO5H 49mm x 55.6mm (TDO5 is 47 x 55 (starion turbo (machining required))) 9 Blades, Allows the Car to Hold Higher Boost Levels at Higher RPM Gives You the ability to Rev Higher RPM and Make More HP Upgrade for TDO5H Blouch, FP, MAP, Tomioka Racing, MHI Turbos Balanced and Ready To Install Light Weight! 157.6 Grams Compared to the Stock 12 Blade Shaft 194.4 Grams Evo 1-3 Evo 10 Turbo Upgrade (no Machining Require) MHI 14b, 16g, 18g, 20g, and Hahn Racecraft Upgrade