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Premium Marine Quality Parts

Ronstan

Ronstan Series 25 Utility Block - Single - Loop Head

SKU 55258 MPN RF571 UPC 9316800011070 MFR Ronstan

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Toronto, ON Vancouver, BC NJ, Warehouse FL, Warehouse

On Back Order

This item is currently on backorder. You can still place an order, but it will only ship once it’s back in stock.

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Series 25 Utility Block™ - Single - Loop 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")
M.W.L.: 300kg(660lbs)
B. L.: 600kg(1,320lbs)
Weight: 15g(0.5oz)

Product Specifications

Dimensions4" L × 2" W × 1" H
Shipping Weight0.1 lb
Country of OriginID
Harmonized Code8483.50.90.40
Northern Marine Canada
Proudly Canadian Owned & Operated!
Serving customers across Canada & the USA with marine parts and accessories.
Canadian Head Office:
Kingston, Ontario, Canada
Warehouse Locations:
Toronto, Ontario, Canada
New Jersey, USA
Florida, USA

About Us

Northern Marine is a Canadian supplier of premium marine and RV parts and accessories from top industry brands. We focus on quality, accurate listings, and dependable fulfillment so you can maintain, repair, and outfit your boat or RV with confidence.

Our goal is simple: get you the right parts, shipped fast, with straightforward service you can count on.