| 摘要 |
A boat drain plug system for attachment to a drain hole within a boat hull, the system including a flange including a threaded sleeve that fits within the drain hole and a threaded opening, a cylindrical drain plug adapted for individually coupling with the threaded sleeve and the second threaded opening wherein the drain plug may be fitted into the threaded opening to secure the drain plug when the sleeve needs to be completely open to allow water to exit a boat.
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