Harken 40mm Double Block Becket 2643

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  • Regular price $125.00
  • Tax included.
  • In stock (1 units), ready to be shipped


Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming.

Length (in) 4 3/16 in
Sheave Ø (mm) 40 mm
Sheave Ø (in) 1 9/16 in
Length (mm) 106 mm
Weight (g) 84 g
Weight (oz) 2.9 oz
Shackle pin Ø (mm) 5 mm
Shackle pin Ø (in) 3/16 in
Maximum line Ø (mm) 10 mm
Maximum line Ø (in) 3/8 in
Maximum working load (kg) 440 kg
Maximum working load (lb) 970 lb
Breaking load (kg) 1080 kg
Breaking load (lb) 2380 lb