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Series 40 All-Purpose Double Block


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In stock online.
Model # 271697 | Mfg # RF41202

Series 40 All-Purpose Double Block. Ronstan's 40mm plain bearing blocks are strong and compact. Smart features include a unique captive lock universal head. For dinghies and keelboats up to 26'. 1 9/16" (40mm) sheave is made from UV-stabilized acetal and accepts a line size of 7/16" (11mm). Cheek is made from stainless steel and fiber-reinforced textured Zytel.

Series 40 All-Purpose Double Block

Ball Bearings Plain Bearings
Becket No Becket
Diameter 7/16 Inch or 11 mm
Direction Any
Integral Cleat No Integral Cleat
Mount Type Swivel Shackle
Ratchet Non Ratcheting
Safe Working Load 1323 Pounds
Sheave Diameter 40 mm
Type Double
Weight 4.8 Ounces

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by PowerReviews
Ronstan Series 40 All-Purpose Double Block

(based on 1 review)

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Reviewed by 1 customer

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Great Blocks

By joe Fern

from Rochester NY

About Me Advanced

Verified Buyer


  • Attractive Design
  • Easy To Install
  • Easy To Use
  • Quality Construction


    Best Uses

    • Sailing

    Comments about Ronstan Series 40 All-Purpose Double Block:

    Great attractive smooth blocks

    • Was this a gift?:
    • No

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