Large Scale Adjustable Control Horn is suitable for all control surfaces on all R/C planes! Features a heavy duty glass filled nylon horn, an 8-32 screw and an anodized machined aluminum support base. Horn is adjustable for control throw, and has a .750″ (19 mm) offset to permit mounting away from hinge line. Includes horn, screw, base, 4-40 Gold-N-Clevis, 4-40 stud and retaining clip.