The “Twin-halyard block” is specially made for a 2 to 1 main halyard.
The very small sheave is aluminium made with a Composite Fibre bushing.
The body is completely made in “Highresistance” stainless steel Nitronic 50.
4 sizes for breaking loads from 2600 to 10000 kg, for boats up to 70 ft.
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