RF3 staunchion block suits leading furling lines back to the cockpit and has a ball bearing sheave that accepts up to 12mm (1/2) Diam. Rope.
Excellent way of lifting furling lines off the deck and leading them aft. Only to be used on straight vertical stanchion posts.
U.V.stabilized, Acetal sheave
U.V. stabilised, Nylon housing
Designed for 25mm (1″) OD stanchions.