Peace of Mind Assurance Our boat drain plugs feature an antivibration design that ensures a tight fit and eliminates accidental leakage. The screw arm and safety design provide reliable security for safe speed navigation. Unmatched Durability Made of 316 stainless steel, these boat drain plugs resist corrosion and erosion in harsh marine environments, delivering longterm durability and reliable performance. Waterproofing sealing performance keeps moisture out, helping maintain a dry cabin and a comfortable space during water activities without leaks. Versatility at its Designed for 1 inch exhaust holes on various jet skis, boats, and yachts, with a 1/2 inch BSPT plug diameter and a 2 inch flange diameter for hassle installation. Key specifications Material: 316 stainless steel Plug diameter: 1/2 inch BSPT Flange diameter: 2 inches Compatible hole size: 1 inch exhaust holes Design features: antivibration design, screw arm, safety design for secure speed navigation Usage scenarios Jet skis and small boats with 1 inch exhaust holes: install for storage or when washing to seal the hole and prevent water intrusion. Boats and yachts with 1 inch exhaust holes: use during transport or periods of nonuse to maintain a dry cabin, even in rough conditions. Harsh marine environments: rely on the 316 stainless steel construction for longterm corrosion resistance and dependable performance.