SKU: 58299006989

Ronstan Series 25 Utility Block - Single - Swivel Shackle Head [RF573]

$20.25 $22.50
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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25

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Description

Ronstan Series 25 Utility Block - Single - Swivel Shackle Head [RF573]Series 25 Utility Block Single Swivel Shackle Head Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets in the block heads can be fitted with shackles, which can also be used to add a becket for extra purchase. Features: Lightweight durable construction Economical Maintenance free Applications: Vang, cunningham and trapeze retriever systems on dinghies Leech line tackles, bunk adjusters, etc

Series 25 Utility Block™ - Single - Swivel Shackle Head


Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets in the block heads can be fitted with shackles, which can also be used to add a becket for extra purchase.

Features:

  • Lightweight durable construction
  • Economical
  • Maintenance free


Applications:
  • Vang, cunningham and trapeze retriever systems on dinghies
  • Leech line tackles, bunk adjusters, etc on larger boats


Materials:
  • U.V. stabilized acetal sheaves
  • Grade 316 Stainless Steel cheeks


Specifications:
Sheave Ø: 25mm(1")
Max. Rope Ø: 6mm(1/4")
Pin Ø: 4mm(5/32")
M.W.L.: 150kg(330lbs)
B. L.: 300kg(660lbs)
Weight: 20g(0.7oz)
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: 58299006989

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4.2 ★★★★★
Based on 27 reviews
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Product Reviews
Z
Verified Purchase
Zane Smith
Fort Morgan, US
★★★★★ 5
Great Puffer!
Great for the price. I live in south east Michigan and this puffy is so warm but also light. Would buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
A
Verified Purchase
Auris K.
Lake Worth, US
★★★★★ 1
Not very puffy puffy jacket
Size: XX-Large, Color: Denim Blue
At xxl the shoulders fit well and perhaps the first jacket where the sleeves came down to my wrists and not halfway to my elbows if I reached forward. Love the zipper. The zipper pull is at my right hand side. It is where i would use my right hand to engage and pull it closed. The zipper glides smoothly. The hood is voluminous. There is no string available to control the fit of the hood. As it us the hood is much too large. It makes the jacket look cheap and unfinished. The jacket would be immeasura bly better if the was a bit more fill in the body and a string pull in the face of the hood to bring the fit closer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 11, 2025
J
Verified Purchase
Johnny M
Fort Morgan, US
★★★★★ 5
It's thin but it's good for cooler mornings and windy days
This jacket is not super thick or sherpa/fleece lined. But it's great for cooler temperatures, windy days, or staying warm while out on a boat. It's lightweight, cuts the wind and is great for layering. Folding it into the bag makes it ideal for travel and camping
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2026
D
Verified Purchase
D Rie
Carnegie, US
★★★★★ 3
Okay for the price
Size: XX-Large, Color: Denim Blue
The product was light and compact for packing for an Alaska cruise. It was also sufficiently warm and relatively rain resistant. But on the second day of wearing, the zipper blew out. I was able to fix for a short while, but in the end, I couldn’t use it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 24, 2025
P
Verified Purchase
Pamela Osborne
Lake Worth, US
★★★★★ 5
Good quality stuff
Color: Blue, Size: Large
Great, looking shirt fits well. Great price great company. Great workmanship is the place for shopping at.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026

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