Whale SF5018 skin fitting made in strong, high-quality moulded white plastic (acetal) with 16mm (5/8") hose tail. This skin fitting is only suitable for use above the waterline due to its construction, but it represents an inexpensive alternative through hull skin fitting for these applications. It features a non-corrosive flanged head. The Whale skin fitting connects to a hose and is designed for through hull applications.