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Current Murrays Sports information regarding COVID-19 virus outbreak, our policy and status at this time. UPDATED 5/25/2020 At this time our warehouse is keeping up with demand, we are making every effort to ship same or next day but it is still possible that Shipping and delivery times may be effected.
Current COVID-19 Notice

Harken Block 10:1 Mainsheet Carbo Air Base

$361.80 each

SKU: 56-9953 Categories: , ,

Product Description

This Carbo AirBlock® has an enormous working range, with a higher working load than a standard block, even though it is lighter in weight. The Carbo Ratchet block allows sailors to hand-hold loaded lines and offers balance between holding power and controlled easing. The base block has an on-off ratchet and will roll freely in both directions when disengaged, such as in light air. Engage the ratchet in heavy air when you need the mechanical advantage of the ratchet. The 57mm ratchet sheave offers 10:1 holding power, making it easier to handhold in heavy air.

Use this 5-sheave Carbo block with cam with #56-9955 top block for a 10:1 mainsheet system.


  • Sheave Diameter: 1-17/32", 2-1/4"
  • Weight: 19.8 oz
  • Shackle Pin Diameter: 1/4"
  • Maximum Line Diameter: 3/8"
  • Harken #HC8454

Note: Maximum working loads and breaking loads for blocks are based on cam strengths.

Additional information

Weight 1.26 lbs
Dimensions 8 × 4 × 4 in

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