57mm Carbo Air® Quadruple Block
|Diameter||7/16 Inch or 11 mm|
|Integral Cleat||No Integral Cleat|
|Length||4 3/4 Inches|
|Mount Type||Swivel Shackle|
|Safe Working Load||2380 Pounds|
|Sheave Diameter||57 mm|
Low-friction 57mm Carbo Air® Quadruple Block is lightweight, strong, reliable—and affordable. 30 percent lighter and 60 percent stronger than equivalent blocks. Sideplates are UV-stabilized, high-strength resin. Ball bearings are made from engineered plastic in fitted ball races.
The 57mm Carbo Air® blocks have an enormous working range that makes them ideal for main and jib sheets, spinnaker halyards and control lines. This range handles loads similar to Harken’s 3" standard blocks. Recipient of both the Dame Award and Sail Magazine's Freeman-Pittman Award for innovation.
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.