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HARKEN 75mm Carbo AirBlocks®

From the folks who invented ball-bearing blocks, this line of blocks boasts an excellent strength-to-weight ratio. The plastic in their sideplates, sheaves and balls makes them 30% lighter, 60% stronger and generally less expensive than equivalent conventional blocks.

The 75mm Carbo Blocks are the only all-plastic blocks with a safe working load over 1,200lb. Because of their large-diameter sheaves and fitted ball races, they release easily under load and keep weight to a minimum. Perfect for mainsheet systems on racing boats and cruisers looking for better performance at a reasonable price. The 75mm single block weighs in at a remarkable 6.9oz. including the shackle, and the double and triple blocks aren’t much more, giving an extremely high strength-to-weight ratio. Recipient of both the Dame Award and Sail Magazine's Freeman-Pittman Award for innovation

  • Sheave: Long-glass reinforced engineered nylon
  • Ball Bearings: Engineered plastic in fitted ball races
  • Sheave Size: 2-15/16" (75mm)
  • Line Diameter: 9/16" (75mm)
  • Cheek Material/Finish: Long-glass reinforced engineered nylon
  • Shackle Strap Type: Stainless swivel shackle
Customer Reviews
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
75mm Sheave Diameter Block, Single Style, 1,213lb. SWL 2640258 2660
In stock online.

$72.99

75mm Sheave Diameter Block, Single/Becket Style, 1,213lb. SWL 2640282 2661
In stock online.

$82.99

75mm Sheave Diameter Block, Double Style, 2,426lb. SWL 2640290 2662
In stock online.

$142.99

75mm Sheave Diameter Block, Double/Becket Style, 2,426lb. SWL 2640316 2663
In stock online.

$152.99

75mm Sheave Diameter Block, Triple Style, 3,639lb. SWL 2640324 2664
In stock online.

$209.99

75mm Sheave Diameter Block, Triple/Becket Style, 3,639lb. SWL 2640332 2665
In stock online.

$214.99

75mm Sheave Diameter Block, Single/Cam Style, 300lb. SWL 2640357 2666
In stock online.

$182.99

75mm Sheave Diameter Block, Triple/Cam/Becket Style, 1,800lb. SWL 2640480 2669
Ships when available.

$339.99

75mm Sheave Diameter Block, Quad Style, 3,639lb. SWL 6840383 2677
Delivery within 2 - 3 weeks.

$224.99

75mm Sheave Diameter Block, Flip-Flop Style, 1,213lb. SWL 9485749 2678
Delivery within 2 - 3 weeks.

$189.99

75mm Sheave Diameter Block, Flip-Flop/Cam Style, 300lb. SWL 9485756 2679
In stock online.

$289.99

Product Description

From the folks who invented ball-bearing blocks, this line of blocks boasts an excellent strength-to-weight ratio. The plastic in their sideplates, sheaves and balls makes them 30% lighter, 60% stronger and generally less expensive than equivalent conventional blocks.

The 75mm Carbo Blocks are the only all-plastic blocks with a safe working load over 1,200lb. Because of their large-diameter sheaves and fitted ball races, they release easily under load and keep weight to a minimum. Perfect for mainsheet systems on racing boats and cruisers looking for better performance at a reasonable price. The 75mm single block weighs in at a remarkable 6.9oz. including the shackle, and the double and triple blocks aren’t much more, giving an extremely high strength-to-weight ratio. Recipient of both the Dame Award and Sail Magazine's Freeman-Pittman Award for innovation

  • Sheave: Long-glass reinforced engineered nylon
  • Ball Bearings: Engineered plastic in fitted ball races
  • Sheave Size: 2-15/16" (75mm)
  • Line Diameter: 9/16" (75mm)
  • Cheek Material/Finish: Long-glass reinforced engineered nylon
  • Shackle Strap Type: Stainless swivel shackle

Specs

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