ProSSS Scupper Flapper Replacement Kit, 4PCS 1 1/2‘’ Boat Scupper Flapper Valves with Fluoro Rubber Seals and 316 Stainless Steel Fasteners Compatible with TH Marine FSRK-3-DP

["[Perfect Compatibility] : Specifically designed to fit TH Marine FSRK-3-DP scupper drain systems for seamless replacement","[Advanced Backflow Protection] : High-performance fluoro rubber flapper valves create a tight seal to prevent water intrusion and backflow","[Upgraded Marine Grade Materials] : Made with corrosion-resistant fluoro rubber and 316 stainless steel fasteners for superior durability in saltwater environments","[Kit Contents] : Includes 4PCS 1 1/2’’ scupper flapper valves, 2 retainer plates, 2 machine screws and 2 self-tapping screws","[Easy Installation] : Simple DIY design allows quick replacement without special tools"]