Name: Harken 2639 40mm Double Swivel Carbo Airblock With Becket
Brand: Pacific Sailboat Supply
SKU: 102300
Price: 88.95 USD
Availability: InStock

HARKEN 2639

Double Carbo AirBlock® with Becket - 40mm

Sheave Diameter 1-9/16"

Low-friction Carbo AirBlocks® are lightweight, strong, reliable, and affordable.

Carbo AirBlocks® are 60% stronger and 30% lighter than Harken's Classic blocks. The Nylon-resin side plates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Sheaves spin on high-load ball bearings with fitted races for low-friction operation. Ball bearings, sheave and sideplates are UV-stabilized with carbon-black additive for maximum protection.

Use the 40mm Carbo for jib and mainsheet systems on high-performance dinghies and for loaded control lines on small keelboats.

Like all AirBlocks®, the three-way head swivels/locks in front/side positions. Blocks are easily disassembled with a single Allen® wrench.

Use for:

Main/jib sheets
Mainsheet fine-tune
Control lines
Vangs
Cunninghams
Outhauls

Mfg No.	Description	Length	Max Line Diameter	Shackle Pin Diameter	Max Working Load	Breaking Load	Weight w/ Shackle
2639	Double / swivel / becket	4-5/16" (110mm)	3/8" (10mm)	3/16" (5mm)	970 Lbs (440kg)	2,380 Lbs (1,080kg)	3.4 oz. (90g)

At Pacific Sailboat Supply, we’re passionate about what we do, and our primary goal is elevating your sailing and boating experience. We cater specifically to racers and enthusiasts of high-performance sailing, offering a meticulously curated selection from over 300 premier marine brands. Our website features less than 5% of our available products, ensuring only the finest sailboat rigging, hardware, electronics, and more make the cut.

But our expertise doesn’t stop with sailboats. We also provide top-quality supplies for powerboats. If you don’t find exactly what you’re looking for, our team is ready to assist you. Reach out via email, chat, phone, or directly through our website messaging service. At Pacific Sailboat Supply, we’re here to help you navigate your sailing and boating needs with excellence.