Double tufnol block with swivel & becket

Double Tufnol Block - Bow with Becket

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Tufnol is a traditional laminated plastic material made from phenolic resin and woven cotton or linen fabric.  It is strong and light, and provides an economical, low maintenance and traditional solution for sailing boat blocks.

Our Tufnol blocks are manufactured in the Netherlands with solid stainless steel frames and brass bush bearings.

The double Tufnol block, fitted with a bow and becket, comes in four sizes to work with ropes from 10mm through to 16mm.


SKU Shell Size  Rope Size* Sheave
Breaking Load 
Safe Working
021638  2-1/4" (58mm)  10mm  30mm  Approx. 610kg  305kg
021639  2-3/4"" (70mm)  12mm  35mm  Approx 910kg  455kg
021640  3-3/4" (95mm)  14mm  50mm  Approx 1700kg  850kg
021641  4-3/4" (120mm)  16mm  63mm  Approx 2040kg  1020kg

* Note - we recommend choosing products one rope size size larger than indicated to ensure adequate free movement.