Specifications: Suitable for Hose Inner Diameter: 3/8 inch 1/2 inch 3/4 inch 1 inch, Flange Outer Diameter: 34mm/ 40.5mm/ 49mm, Thread Length: Approximately 30.5mm/ 29mm/ 43.5mm. Robust Construction: Built to last, boat water pellet plug is constructed from high-grade 316 stainless steel, renowned for its exceptional hardness, wear resistance, and rust-proof properties, guaranteeing longevity and durability. Precision Engineering: Each vent undergoes meticulous casting and mirror-polishing processes, enhancing its resilience against saltwater and harsh marine conditions. Compact and Practical: With a compact design, this vent can be conveniently installed in tight corners and narrow spaces, offering ease of installation and usage. Universal Applicati.