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![Harken 40mm Carbo Air Triple Swivel Block [2640]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/79736XL.jpg?v=1643861901 "Harken 40mm Carbo Air Triple Swivel Block [2640]")
![Harken 40mm Carbo Air Double Fixed Block w/Becket [2643]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/79740XL.jpg?v=1643861938 "Harken 40mm Carbo Air Double Fixed Block w/Becket [2643]")
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Ships within 48 hours · Estimated delivery Jun 14 - Jun 19
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Description
Harken 40mm Carbo Air Double Fixed Block w/Becket [2643]40mm Carbo Air Double Fixed Block with Becket Low friction Carbo Air blocks are lightweight, strong, reliableand affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Specifications: Sheave (mm)40 mm Sheave (in)1 9 16 in Maximum line (mm)10 mm Maximum line (in)3 8 in Maximum working load (kg)440 kg Maximum working load (lb)970 lb
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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![Harken 40mm Pivoting Lead Block - Carbo-Cam Cleat [2157]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/79733XL.jpg?v=1643861875 "Harken 40mm Pivoting Lead Block - Carbo-Cam Cleat [2157]")
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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 "Harken 40mm Carbo Air Block w/Cam Cleat [2645]")
Best in 7 days
4.3 ★★★★★
Based on 1134 reviews
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Product Reviews
★★★★★ 5
10/10
Size: Medium(6")
My dog loves this ball. Durable and the straps seem to be strong too. Would highly recommend
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Durable!!
Size: Medium(6")
So well made for the active dog!! Colorful, durable and good quality!!
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Keeps the puppy entertained for hours
Size: X-Large(8")
My dog loves this. I've had to buy two because my dog destroyed the first one but there's only so much you can do with a 5 month old german shepard.
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Reviewed in the United States on May 8, 2026
★★★★★ 1
Not durable and lasted a week
Size: X-Large(8")
Had it a week and it popped. The durability is not good! It’s not chew resistant, the value for the money is poor! My dogs enjoyed it for the week it lasted it was a good size , however extremely disappointed!
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Reviewed in the United States on May 10, 2026
★★★★★ 4
Fun dog toy
Size: Medium(6")
Great ball, easy to use, sturdy toy, and fun toy that dogs love. Only a 4 star as I wish it was a little bit bigger and with more handles.
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Reviewed in the United States on February 6, 2026
