Comp Cams Hi-Tech Dual Taper 7/16" Diameter .125" Wall Thickness Heat Treated Chromoly Steel Pushrods Complete Set of 16 that will fit Big Block Chevy and other engines. 3/8"-7/16" Dual Taper Sizes. Includes part numbers 8219-1(8 ea.) & 8249-1(8 ea.) 8.550" length & 9.300" length