Features 1. Dimensions: The outer diameter of the fitting hole is 22mm (0.87in), the inner diameter is 18mm (0.71in), compatible with hose, tube, or pipe. 2. Durable Material: Constructed from premium 316 stainless steel, providing excellent corrosion resistance for use in harsh marine environments. 3. Mirror Polishing: Surface of the through-hull exhaust fittings is polished to resist rust and withstand prolonged exposure to saltwater. 4. Versatile Application: Suitable for various exhaust systems and piping, offering a reliable solution for yacht, ship, or diesel heater vent installations. 5. Long-Lasting Performance: Robust design ensures durable, trouble-free operation and extends the service life of marine equipment. Specifications Item Type: Thru Hull Exhaust Skin Fitting Socket Material: Stainless Steel Outer Diameter: Approx. 22mm (0.87in) Inner Diameter: Approx. 18mm (0.71in) Application Suitable for yachts, ship pipeline exhaust vents, and diesel heater exhaust ports. Package List 1 x Thru Hull Exhaust Tube Socket 3 x Gasket 3 x Screw 3 x Nut