Need a reliable and corrosion-resistant deck fill for your boat? This Sea Dog Line stainless steel deck fill is built for the job. It's designed specifically for fuel (gas) applications, featuring durable 1-1/2 inch - 11.5 NPSM straight threads for a secure, leak-resistant connection. The cap comes with a handy attachment cable, so you won't accidentally drop it overboard—a small but crucial feature. Sea Dog Line is a trusted name in marine hardware with a history going back to 1933, known for quality and durability. Made from marine-grade stainless steel, it's built to withstand harsh saltwater environments without rusting. Perfect for replacing a worn-out fill or as part of a new boat build. Installation is straightforward for any seasoned boat owner or marine technician. Keep your fuel system secure and up to code with this solid, no-nonsense piece of hardware from a reputable family-owned company.