Best in 7 days
![Harken 40mm Pivoting Lead Block - Carbo-Cam Cleat [2157]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/79733XL.jpg?v=1643861875)
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Ships within 48 hours · Estimated delivery Jun 29 - Jul 4
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Description
Harken 40mm Pivoting Lead Block - Carbo-Cam Cleat [2157]40mm Pivoting Lead Block Carbo Cam Cleat High strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and as headknockers on dinghies and beachcats for sheeting directly from the boom. Hole spacing and rivet size are the same as Classic models, making upgrades easy. Cam reverses for either up or down cleating. Can be used as becket block. Specifications: Sheave (mm)40 mm Sheave (in)1 9 16 in Maximum line (mm)10 mm
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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- Please click here for more details>>> Return & Exchange Policy
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![Harken 40mm Carbo Air Block w/Cam Cleat [2645]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/79744XL.jpg?v=1643861979)
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![Harken 40mm Carbo Air Double Swivel Block w/Becket [2639]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/79735XL.jpg?v=1643861892)
4.6 ★★★★★
Based on 1274 reviews
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Product Reviews
★★★★★ 4
Cover too loose.
Size: 300A Fuse Holder
Nice looking, decent quality, versatile for different gauges. My only complaint with this holder is the cover doesn’t stay on very well, bought 3, and all 3 pop off easily, you will need to zip tie on.
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Reviewed in the United States on January 12, 2026
★★★★★ 5
Works as it should.
Size: 300A Fuse Holder
I’ve had several of these in my build for over a year now. Zero issues.
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Reviewed in the United States on December 3, 2025
★★★★★ 5
Good brand
Size: 300A Fuse Holder
Good product
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Reviewed in the United States on November 5, 2025
★★★★★ 5
good product
Better then expected
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Reviewed in the United States on April 12, 2026
★★★★★ 5
Good bang for your buck, great quality.
Works great. Most of it is metal and works as a heat sink. Came with two fuses and the adapters for smaller or larger Guage wires. Fit very well and easily for our choice of installation and was a great price.
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Reviewed in the United States on May 8, 2025
