Ronstan 20 mm Hook Block

SKU: 60316
Item ships from our warehouse in average of 7-10 days
Ronstan's ball bearing blocks were conceived and engineered for the demands of competitive sailing in all types of boats and have rapidly become the international choice for high performance hardware. Has a low profile swivelling hook for quick and easy attachment.



  • Highly efficient, low friction bearing systems for optimum sheeting and trimming performance
  • Precision molded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction and provides a unique 2-Stage bearing system:
  • Stage 1: Under moderate loads, Acetal ball bearings ensure minimum friction
  • Stage 2: Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished Stainless steel race takes over, maintaining low friction performance

Additional Info

Additional Info

  • Sheave: 20mm (3/4")
  • Max Rope Diameter: 6mm (1/4")
  • Weight: 20g (0.7oz)
  • Max Working Load: 250kg (500lbs
  • Breaking Load: 550kg (1210lbs)
SKU 60316
Manufacturer Ronstan
MPN RF20180
Condition New
Line Diameter 6mm (1/4")


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