Sullivan 8-32 Heavy Duty 1/4 Double Rudder Horns This is Sullivan's 1/4 Scale Double Rudder Control Horn. Suitable for pull-pull setups on rudders and elevators on all Large R/C airplanes. ++ Additional Technical Information Will Be Added As It Becomes Available. ++ FEATURES Heavy Duty glass filled nylon horn, and an Anodized Support base. Comes with 4" threaded 8-32 stud that threads all the way through the control surface. Horns are independently adjustable for control throw. Comes with a .750" (19mm) offset, to permit mounting away from the hinge line. INCLUDES Two horns, threaded rod, two bases, two 4-40 Gold-N-Clevies, two 4-40 studs and Retaining clips.