SKU: 47074585318

Harken 29mm Zircon block

Sale price$189.00 Regular price$210.00
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

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Description

Harken 29mm Zircon blockUse the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Zircon Block Single Sheave 29 mm The Zircon single sheave block offers cutting edge performance tailored for racing sailors. Designed with a focus on durability and efficiency, it features a 29 mm ceramic bearing sheave that

Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets.

Zircon Block – Single Sheave 29 mm

The Zircon single sheave block offers cutting-edge performance tailored for racing sailors. Designed with a focus on durability and efficiency, it features a 29 mm ceramic bearing sheave that supports ropes up to 6 mm and manages workloads of up to 80 kg. This block is perfect for lightweight and high-performance sailing.

Features of the Harken Zircon Series

  • Lightweight design for enhanced performance
  • Zirconium ceramic bearings for reduced drag and extra strength
  • Reliable, durable construction for long-term use
  • Smooth operation, even with minimal loads

Technical Details

  • Single 29 mm sheave
  • Maximum rope diameter: 6 mm
  • Maximum workload: 80 kg

 

Series Zircon
Sheaves Ø 29 mm
Number of sheaves 1
Bearing Ball bearing
Max rope diameter 6 mm
Swivel No
Cam No
Ratchet No
Breaking Strength (kg) 240
Safe Working Load (kg) 80


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 47074585318

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4.3 ★★★★★
Based on 26 reviews
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Verified Purchase
FACSLady
Waukegan, US
★★★★★ 5
Great samples!
A great kit to try new products. I will purchase all Thayer’s products again!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
A
Verified Purchase
Ashley O'Banion
Lowell, US
★★★★★ 5
Perfect for travel
Love this product but this is perfect for a carry on for a plane.
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Reviewed in the United States on May 16, 2026
G
Verified Purchase
Gg
Grantham, US
★★★★★ 5
Best for nighttime skincare
These worked so well for me. I have extremely sensitive dry skin and I break out from most products. I use these 2 every night after the cerave hydrating facial cleanser, and then I use the embryolisse moisturizer to lock it all in. My skin is smooth and hydrated. I get told all the time that i have baby skin. I'm 25 years old.
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Reviewed in the United States on January 18, 2026
W
Verified Purchase
whale
Dallas, US
★★★★★ 5
Easy to use & provide great light!
I bought two lights for our patio. I love them. They have low and high light settings, which is wonderful. They're easily attached to the umbrella! I was pleased with the quality.
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Reviewed in the United States on June 18, 2025
C
Verified Purchase
CAROLYNN DONLEY
Grantham, US
★★★★★ 5
The best light!
I use these lights for every backyard party. ! So easy to attach to the umbrella and easy to remove! The brightness is in 3 levels. Works great!!
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Reviewed in the United States on June 5, 2024

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