Exacct 1936 61 cu in small port replica Knucklehead cylinder head set ( blank set ) 1936 only  feature original cast . Head set include valve seats, Manifold screw and primer plug boss plug installed. Rocker brackets has a 90 Dergee V chape and shorter reinforcement as original. The heads have all fins like original and can be completed with open Rocker cups only!
Brand is manufactured by Motortechnic Mfg. in Germany
NOTE:
Head are casted with numbers 119-35 front head 119-352 rear head and hall mark like original. Uses 1-3/8" large hex 18mm plugs. Valve seats and 61" intake nipples are installed. Late cups and tins 1941-1947 will not fit.
The mold was taken from original heads, you can not tell from the original