Made from 7/16ö diameter 4130 Chromoly steel with the same great design as the regular install Feuling« adjustable pushrods, but feature a slightly shorter tapered tube Come disassembled, allowing the engine builder to install the pushrods without removing the top rocker box Can be used with the factory pushrod tubes Use separate lengths for intake and exhaust which keeps the adjustment area to a minimum, creating a fast-install pushrod with maximum rigidity promoting maximum valve lift Standard .095" wall thickness Made in the U.S.A.. PUSHRODS FAST INSTL 85-99