The Forespar outboard well drain offers acorrosion proof, easy-to-install replacement for the old fashioned brass fitting. Can also be used as a chafe guard to lead hose, wiring,steering cables, etc. through bulkheads, floor timbers and fiberglass panels. Barbs on O. D. ensure positive locking action. Designed to fit 1 diameter hole. Flange is 1-1/4 dia. Usable length is 2-1/2.