Lewmar 50mm Synchro Block with Becket


Lewmar’s Synchro Blocks are engineered for speed, efficiency and superior handling.

RRP £24


Out of stock

SKU: JS040820201355 Category: Tags: , , , , ,



  • Stainless steel strap for improved strength and longer service life
  • Stiff glass fibre reinforced cheeks to prevent lines from wedging
  • Innovative design with tool-free sliding swivel locking mechanism
  • Sheave diameter: 50mm


Plain bearing blocks are typically used for heavy and static loads in:

  • Halyard tuning
  • Mainsheet systems
  • Mast foot blocks
  • Mast head blocks
  • Boom vang

Practical switch from swivelling to fixed shackle

Additional information



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