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Sheave 38mm
Double Block - Universal Head
Maximum working load (kg) 350 kg
Ratchamatic block versions roll freely in both directions under low loads and automatically engage a ratchet mechanism as loads increase
HARKEN 125mm Aluminium Stand-up Block 16504 Sheave 38mmBlack Magic Air blocks are a top favourite of Big Boat performance racers and cruisers. These lightweight, free running, powerful performers are used for sail controls that see lots of action. Sideplates and sheaves Hard Lube anodized for maximum UV protection and a smooth surface. Centre cage keeps Torlon roller bearings separated and parallel to reduce friction. Torlon is a registered trademark of Solvay Advanced Polymers L. L. C.
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