for US Continental orders over $99
57mm Black Magic Block - Single / Swivel / Low-Load / Becket
Harken 57 mm Black Magic Blocks
Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems.
MAURIPRO Sailing; your direct access to shop for Harken Blocks 57mm Black Magic. Chat with us regarding any sailboat equipment inquiries. We want to offer sailors the best selection of sailing equipment and the knowledge to make your choice with confidence. Proper sailing equipment can make the difference in keeping your crew at optimum performance or even just staying comfortable on your next family outing. Find the best equipment to help you get the most out of your next sailing experience.