Made from 7/16” diameter 4130 Chromoly steel with the same great design as the regular install Feuling® adjustable pushrods, but feature a slightly shorter tapered tubeCome disassembled, allowing the engine builder to install the pushrods without removing the top rocker boxCan be used with the factory pushrod tubesUse 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 liftStandard .095'' wall thicknessMade in the U.S.A.