FTF Performance Valves:

One piece stainless steel, stellite-tipped valves impregnated by a nitrided process with .002″ depth & .0002″ surface build-up to improve wear properties & reduce friction. Lightweight with profiles that provide excellent flow characteristics. Can be run in either cast-iron or bronze valves guides at close tolerances for maximum oil control & heat dissipation. Sold each, Made in the USA.