If you have a thin deck - say less than " thick, then you can use these hosetail fillers, and still get 2 hose clips on. Any thicker, and you are better off using the BSP fillers, and a connector to fit the hose.
Use these for decks thicker than 1" or so, with a connector to fit the hose. That arrangement will mean the top of the hose will be about 2" below the deck level, which should be enough to get hose clips on.
For use with the BSP deck fillers.
Cast in Gunmetal (Bronze) with a polished finish these are ideal to accomodate a fitting that is not always required, such as a stand-up block or bonnet fairlead.
Ideal if you always lose your keys or can't find a coin. Available in Chrome on request.
Cast in gunmetal bronze with a highly polished finish. All come with bronze key. The nominal dimension is the aperture of the hole.