Harken 57mm Zircon Double Block $302.41 Qty Out of Stock This item will be shipped within 10 days. Enter your e-mail address to be notified when product is in stock Notify Me! Add Review Ask Question Product Description Reviews (0) Questions Zircon blocks help trimmers match sail shapes to new conditions immediately. At the core of the Zircon performance are industrial ceramic ball bearings mounted inside caged races. The cages keep these bearings separated so they don’t bunch, touch, and stop each other. The result is the most efficient small boat block Harken has ever made. Zircon blocks are available in 40- and 57-mm sheaves in single and double blocks, with or without beckets. Currently there are no reviews for this product. Currently there are no questions for this product. Similar Products Harken 57mm Aluminum Double Block - Swivel $1,059.05 View... Harken 22mm Slider Battcar - Intermediate $234.65 View... Harken 60mm Protexit� Exit Block HK1204 $343.42 $254.13 View... Harken 45mm Aluminum Element Double Block - Swivel, Becket $278.43 View...

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