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Ships within 48 hours · Estimated delivery Jun 14 - Jun 19
For Your Every Summer RSVP, with Code: SUMMER15
Description
Harken 40mm Carbo Air Double Swivel Block [2638]40mm Carbo Air Double Swivel Block 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)
![Harken 40mm Carbo Air Double Swivel Block [2638] Harken 40mm Carbo Air Double Swivel Block [2638]](https://cdn.shopify.com/s/files/1/0611/7297/3739/products/79734XL.jpg?v=1643861883)
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
4.7 ★★★★★
Based on 1401 reviews
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Product Reviews
★★★★★ 5
Organizer tray
Color: Brown +Wireless
This thing's style is 1960's cool.. Great organizer and charger.
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Reviewed in the United States on January 24, 2026
★★★★★ 5
Cute Tray, Bad Charger
Color: Black
Worked for about a month, now it will only charge sometimes.
Edit: Seller contacted me and replaced item. It is working perfectly fine now.
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Reviewed in the United States on March 28, 2025
★★★★★ 3
The charger is slow
Color: Brown +Wireless
Looks great but the charging takes forever
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Reviewed in the United States on May 18, 2026
★★★★★ 5
I’m really impressed with these 12-inch Heavy Duty Floating Shelf Brackets!
Size: 12 Inch, Style: Black 6Pack
I recently installed them in my living room to hold some books and decorative items, and they’ve been fantastic. The brackets feel extremely solid and well-made — the 1/5-inch thick iron gives them a sturdy, industrial look and they hold the shelves without any wobbling or sagging. I also love the sleek black finish; it looks modern and stylish, and it really complements my décor.
Installation was straightforward and stress-free because the set comes with screws, anchors, and a lever — everything I needed to get the shelves up securely. The pack of six brackets is great because it gave me enough for multiple shelves and even an extra in case I need it.
The only minor thing to note is that aligning the brackets perfectly requires a bit of patience, but once leveled, they hold like a dream.
Overall, these brackets are a great combination of strength, style, and value. They’ve made my shelves look clean and professional, and I feel confident they’ll last for years. Highly recommend for anyone looking for heavy-duty, attractive shelf support!
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Reviewed in the United States on December 7, 2025
★★★★★ 5
High quality look for office
Size: 10 Inch, Style: Black 4Pack, Size: 10 Inch, Style: Black 4Pack
These brackets were exactly what I was looking for. Very solid construction, clean powder-coated finish, and they gave the shelves a modern industrial look without being bulky. Installation was straightforward, and once mounted into studs they felt extremely sturdy.
I used them for floating wood shelves and was honestly impressed with how much weight they can handle without flexing. The black finish also matched perfectly with the rest of the room hardware.
For the price, these are a great value and look far more expensive than they are. Would definitely buy again for future projects.
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Reviewed in the United States on May 1, 2026
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