These RV cranks are constructed of diecast metal and come in a zinc-plated finish. They are designed for use with crank out windows and vents, and offer increased durability over plastic-constructed cranks. Each crank features grooved ends that fit over 5/16 in. splines. They come equipped with swivel heads and 1 in. long shafts. They are easy to install, and are preferred and used by many vacationers.
