Forespar outboard well drain offers a corrosion 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 OD ensure positive locking action. Designed to fit 1”(25.14mm) diameter hole. Flange is 1-1/4”(31.75mm) diameter.