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![Harken 57mm Aluminum Low Load Black Magic Block w/Swivel [3226]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/93959XL.jpg?v=1648521049)
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Ships within 48 hours · Estimated delivery Jun 22 - Jun 27
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Description
Harken 57mm Aluminum Low Load Black Magic Block w/Swivel [3226]57mm Aluminum Low Load Black Magic Block with Swivel 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. A center cage keeps Torlon roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep the line from
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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4.8 ★★★★★
Based on 1570 reviews
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Product Reviews
★★★★★ 5
Buying another package
Size: Large, Color: Multicoloured D (5-pack)
Oh my gosh, I love these!!! They are very comfortable and not overly tight. The material is so thin and breathable, very comfortable. Love the colors. Am buying another package! I'm in perimenopause and these definitely keep me cooler than my tradition cotton underwear.
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Lovely!
Perfect! Lovely in every way, gorgeous matcha color, perfect fit, super comfy.
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Reviewed in the United States on October 21, 2025
★★★★★ 5
Perfect swoop level
Size: Medium, Color: Thyme
I love these. Very comfortable. I feel like im treating my body in a healthy manner. Cotton only. I have many colors and will get more.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Soft n cute
Size: XX-Large, Color: Thyme
Very soft, easy to get on and off! I will be ordering more!
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Reviewed in the United States on October 7, 2025
★★★★★ 4
Soft and comfy
Size: XX-Large, Color: Black
Nice, soft, fits pretty well although space between cups is a little oddly wide which I’ve never had an issue with before. Still, it’s cotton and comfortable.
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Reviewed in the United States on November 18, 2025
