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October 28, 2024 2 min read

Allen Brothers 20mm Pulley Block Range at sailing chandlery

The Allen A2020 20mm pulley block is the go-to low-friction, fast-rolling, small pulley. It’s lightweight and strong, making it ideal for dinghies, windsurfing, kitesurfing, and anything else that runs smaller-diameter lines.


The Allen 20mm blocks have a wide range of blocks to suit most control line applications.

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Allen 20mm Pulley Block Range

Allen Brothers 20mm Dynamic Block

Specifications

  • Length: 37mm
  • Line diameter: 2.5 - 6mm
  • Breaking load: 540kg
  • Maximum dynamic load:115kg
  • Weight: 11.1g

Allen Brothers 20mm Dynamic Block - High Load

Specifications

  • Length: 37mm
  • Line diameter: 2.5 - 6mm
  • Breaking load: 540kg
  • Maximum dynamic load:250kg
  • Weight: 17.5g

Allen 20mm Single Stand Up Fixed Block

Specifications

  • Breaking Load - 540kgs
  • Fixing Hole Centres - 27mm
  • Length - 43mm
  • Max Rope Diameter - 6mm
  • Max Working Load - 115kgs
  • Weight - 15.4grams

Allen 20mm Single Tii On Block

Specifications

  • Breaking Load - 540kgs
  • Length - 29mm
  • Max Rope Diameter - 6mm
  • Max Working Load - 115kgs
  • Weight - 8grams

Allen 20mm Double Block with Becket

Specifications

  • Breaking Load - 600kgs
  • Length - 59mm
  • Max Rope Diameter - 6mm
  • Max Working Load - 225kgs
  • Weight - 33.5grams

Allen 20mm Triple Block

Specifications

  • Breaking Load - 650kgs
  • Length - 50mm
  • Max Rope Diameter - 6mm
  • Max Working Load - 320kgs
  • Weight - 47.9grams

Allen 20mm Single Block with Swivel Head

Specifications

  • Breaking Load - 350kgs
  • Length - 53mm
  • Max Rope Diameter - 6mm
  • Shackle Pin Diameter - 4mm
  • Max Working Load - 115kgs
  • Weight - 15.4grams

Allen 20mm Single Fork Head Block with Hook

Specifications

  • Breaking Load - 165kgs
  • Length - 65mm
  • Max Rope Diameter - 6mm
  • Max Working Load - 115kgs
  • Weight - 17.5grams

Allen 20mm Single Dynamic Block With Articulating Fork Head

Specifications

  • Breaking Load - 350kgs
  • Length - 48mm
  • Max Rope Diameter - 6mm
  • Max Working Load - 115kgs
  • Weight - 15.2grams