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Harken Stand Up Bases & Springs allow a wide variety of blocks to be held upright, swivel freely, or pivot so lines have a fair lead under load and Springs support blocks on padeyes, eyestraps, bases, and traveler cars, and prevent blocks from hitting the deck.
MAURIPRO Sailing; your direct access to shop for Harken Stand Up Bases & Springs. Chat with us regarding any sailboat equipment inquiries.