Marelon Full-Flow Seacock & 1/2" Mushroom Through-HullThis integrated 2-part system comes complete with a Marelon valve and properly matched mushroom head thru-hull with super strong "buttress" type threading. This new package is designed to eliminate valve and thru-hull thread style mismatches and associated cross-threading for after market installations common when customers select individual parts from bins.Features: System Includes Full Flow Seacock With Integrated Hose Connector and Mushroom Thru Hull; Exceeds ABYC. H-27 Standards - UL Approved; For Use Above or Below Waterline; Never Corrodes - Exclusive Polymer Formulation; Includes Emergency Handle Cap Thru-Hull Plug; - cis2:mm5mnJlm -