Ronstan SHOCK™ sheaveless blocks are made from anodised aluminium and available in three different colours makes line identification easier. The applications for the product are virtually limitless. On dinghies, skiffs and small multihulls they can be used in tweakers, vangs, trapezes, cunninghams, barber haulers and kite bridles. On keelboats and larger multihulls, applications include lazy jacks, sail covers, tie-downs, bunks or motor hoists.
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