Vault Drain PlugThe Seaview Vault Series drain plug is engineered to screw right into the existing 1/2 NPT brass or stainless transom garboard.Features:Triangular ergonomic cap - no tools requiredFits all 1/2 NPT brass and stainless transom garboardsNPT thread and a backup O-ring - watertight fitFloats if accidentally dropped in the waterManufactured from durable marine-grade ABSDirect replacement for black or white plastic, bronze, chrome, or brass traditional drain plugs. 114-02030410, 02030710, 50-18741, 18721The matching garboard utilizes a gasket in place of messy silicone sealants