The Seaview Inteliplug Pro Transom Drain Plug has been reimagined and engineered to be easy to use and impossible to lose.• Triangular ergonomic cap so there are no tools required to tighten or loosen the plug• Captive spring-loaded cap stays attached• Modified NPT threads form a primary seal• The tension of the integrated O-ring forms a secondary seal• Engineered transom gasket â no messy silicone needed• Approved for all marine environments including saltwater• Direct replacement for the bronze and stainless traditional-style garboards• Large opening in garboard assembly for easy flow/drain• Manufactured from glass fiber-reinforced ABS to increase strength and flexibility• Increases fatigue endurance, resistance to high and low temperatures, and resistance to abrasion• 2" outer diameter â fits in the same spot as your current garboard drain plug Modified NPT threads & integrated O-ring form watertight seal Captive spring-loaded cap stays attached Fits in same spot as your current garboard drain plug | Seaview Inteliplug Pro Drain Plug