Old-Stf Rocker Box Oil Line STFB57Old STF Ironhead Sportster loop rocker box lines 1 4in. Brass oil lines pre bent with all necessary fittings Easy install, all lines and fittings are polished. Install loop up or down No hassle kit for Shovelheads 1966 84 Heavy 1 4in. Brass oil lines are pre bent with all necessary fittings These lines will eliminate the problem of the starving front head All compression fittings are pre tightened, thread sealant is provided for the npt to case and