Polish your image with these beautiful, durable stainless steel fittings. Each Thru-Hull and Scupper Valve is available with a new silicone gasket and are backed by Attwood. Why specify plastic parts when these fittings will last the life of the boat? Cast from certified enhanced 316 Stainless Steel allow for strength and lifetime corrosion-resistance. We polish all visible areas to a mirror finish, then each part through a passivation for additional protection. Thick steel sidewalls withstand continual stress and hose flexing. A channel under the flange holds a bead of sealant, making it easier to install and apply a trouble free seal. All models have wrench flats or an end notch to hold as a gripping surface. One installer can tighten all connections from inside the hull. Barbed tail ends provide plenty of room to hold multiple clamps.