Stainless Steel Thru-Hull Short Straight Barbed – 1-1/2” Inner Diameter Polish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last the life of the boat? Rugged Stainless Construction: Cast from certified Enhanced 316 Stainless Steel alloy for strength and lifetime corrosion-resistance All visible areas are polished to a mirror finish, then passivate each part for additional protection Thick steel sidewalls withstand continual stress and hose flexing Faster, Simpler Installation: Each Thru-Hull is available with a new silicone gasket A channel under the flange holds a bead of sealant, making it easier to 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 The barbed tail ends provide plenty of room to hold multiple clamps Stainless Steel Straight Thru-Hulls, Barbed Short Thread is a more compact size, which allows installation near corners and in confined areas Specifications: Hose size: inch 1-1/2” inner diameter Flange Diameter: inch 3” Thread O.D. outside diameter: inch 1-7/8” – Thread Length: inch 1-1/4” Barb Length: inch 1-1/2” Total Length: inch 3-1/8” Install Hole Saw Size: inch 2” – Thread NPSM: inch 1-1/2” Max Hull Thickness: inch 5/8” *Stainless Steel Thru-Hull Connectors are designed for installation above the water line only