Best in 7 days
![Harken 40mm Carbo Air Double Swivel Block w/Becket [2639]](https://cdn.shopify.com/s/files/1/0751/4878/7965/files/harken-40mm-carbo-air-double-swivel-block-w-becket-2639-blocks-100.webp?v=1752256495)
Pay in installments of $23.49 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Harken 40mm Carbo Air Double Swivel Block w/Becket [2639]40mm Carbo Air Double Swivel 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 Quick Guide (pdf)
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
Discover Niche Categories That Outsell
Top-Converting Item to Boost Your Average Order
Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.2 ★★★★★
Based on 1057 reviews
Sort
Product Reviews
★★★★★ 4
Almost good
Item Package Quantity: 1
They worked kinda good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
★★★★★ 5
Good quality
Item Package Quantity: 1
Works great, would by it again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
★★★★★ 2
Don't waste your money.
Item Package Quantity: 1
Did not work!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
★★★★★ 1
Doesn't work
Item Package Quantity: 1
No effect at all on my headlights. Don't waste your money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
★★★★★ 5
Well worth the money. And easy to use.
Item Package Quantity: 1
For what it cost, it worked way better than I expected. 👍
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
recommand products
Women's Front Open Black Bra - Push Up Bra, Single Padded Bra
299.50
Tartan Blue Green Bassinet Fitted Sheet with a Flat Sheet Sewed Attached
38.95
Pack Of 3 - Standard Plain Supersoft Camisole
337.50
3/4 Ctw Lovebright 3 stone Essential Round Cut Diamond Pendant with Chain in 14K White Gold
955.00
1/4 Ctw Lovebright Oval Shape Round Cut Diamond Paperclip Necklace in 14K Yellow & White Gold
815.00