SKU: 51664533447

Harken 2158 18mm FLY Double Carbo T2 Block

Sale price$49.85 Regular price$55.39
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Ships within 48 hours · Estimated delivery Sep 19 - Sep 24

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Description

Harken 2158 18mm FLY Double Carbo T2 BlockHarken soft attach Fly blocks are designed to provide strength without mass, providing sailors with big power in a low aero package. Designed specifically for high tech line, these efficient blocks have an incredible working load for their small size. Fly blocks are perfect for use on dinghies and sportsboats and for kicker cascades and backstay systems on Grand Prix racers. 18mm blocks feature and integrated stainless steel inner race and rivet,

Harken soft-attach Fly blocks are designed to provide strength without mass, providing sailors with big power in a low-aero package. Designed specifically for high-tech line, these efficient blocks have an incredible working load for their small size. Fly blocks are perfect for use on dinghies and sportsboats and for kicker cascades and backstay systems on Grand-Prix racers.

18mm blocks feature and integrated stainless steel inner race and rivet, stainless steel ball bearings, and composite fibre-reinforced side plates,

A length of Spectra line with a polyester cover is included. Please download the Harken manual for correct use of this product and its application HERE

Block properties

Sheave diameter 18 mm
Length 28 mm
Weight/span> 7.2 kg
Max. line dia. 5 mm
Max. Working load 204 kg
Breaking load 608 kg
Shipping Notes
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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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SKU: 51664533447

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4.0 ★★★★★
Based on 27 reviews
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Lindsey K
Chelsea, US
★★★★★ 5
Fav socks
My favorite socks! Love them!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
D
Verified Purchase
Dawn
Waukegan, US
★★★★★ 4
Not bulky fit
Size: Large, Color: (009) Gray Dawn / White / Prime Pink
Thinner than UA other cushioning run socks, but this fit is perfect and doesn't shift in my shoe. I wear a women's 9.5 and determined Large doesn't squeeze my foot like Medium size (too exact). Bonus... avaliable olors beyond black and Grey.
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Reviewed in the United States on October 2, 2025
C
Verified Purchase
Cynthia Chouinard
Battle Creek, US
★★★★★ 5
Comfortable
These are very comfortable to wear
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Reviewed in the United States on January 3, 2026
J
Verified Purchase
John Mix
Lexington, US
★★★★★ 5
Love these socks!
The wife struggles with socks. She only like the Nike ones, then they discontinued them, so had to start the search again! Found these, they are expensive just like the Nike, but the size is true, they look great, they are super soft and stretchy. They are light weight and breathable and seem to wick away moisture. She loves these!
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Reviewed in the United States on November 18, 2025
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Verified Purchase
Glass
Dallas, US
★★★★★ 5
I stay on your foot they don’t slip in your shoe
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
This is the only socks I wear Under Armour because they stay in place I wear a size 8, but they’re more comfortable with a large instead of a medium, but I wear both because I have them already and you can pull them to stretch them out a little bit
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Reviewed in the United States on May 12, 2026

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