Skip to content Skip to navigation menu
Live Chat

Series 40 All-Purpose Double Block


Model # 271697 | Mfg # RF41202
In stock online.

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

West Advisor

The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.