Allen 20mm Pulley Block Range at Sailing Chandlery

Rated 4.9 out of 5 by our customers

90 Day Risk Free Returns

Price Match Promise

5 Star Rated by Sailors

Over 60,000+ Orders Shipped

Fast Dispatch and 5 Star Customer Rated

Want Money Back on Every Purchase? Join the Sailors Club

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.

watch our product review

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



Also in News

April 2026 Newsletter | Sailing Chandlery
sailing chandlery start of season newsletter

April 03, 2026 5 min read

Get race-ready with our April 2026 sailing guide. From RS boat covers to Harken hardware, discover the essentials you need for a successful start to the season.
Sailing Chandlery x Performance Academy Sailing Scholarship  | Sailing Chandlery
Sailing Chandlery & Performance Academy Sailing Scholarship

March 20, 2026 6 min read

Meet the 2026 PASS scholars! Sailing Chandlery and the Performance Academy partner to support the next generation of sailing talent. Read the full announcement.
Sailing Chandlery Ltd Aquires Hikingbench and Rigtube
Sailing Chandlery Ltd Acquires Hikingbench and Rigtube

March 03, 2026 2 min read