HARKEN–57mm Carbo Air® Double Block
57mm Carbo Air® Double Block
|Diameter||7/16 Inch or 11 mm|
|Integral Cleat||No Integral Cleat|
|Length||4 3/4 Inches|
|Mount Type||Swivel Shackle|
|Safe Working Load||1584 Pounds|
|Sheave Diameter||57 mm|
Harken 57mm Carbo Air® Double Block allows a 2:1 or 3:1 purchasing system.
Low-friction Carbo AirBlocks® are lightweight, strong, reliable—and economical. Consistently 30% lighter and 60% stronger than equivalent Classic blocks. The sideplates are UV-stabilized, high-strength resin and designed for small-diameter lines favored by racers. Good for jib and mainsheet systems on high-performance dinghies, and for high-load control lines on small keelboats.
Recipient of both the Dame Award and Sail Magazine’s Freeman-Pittman Award for innovation, this innovative line of blocks turns fiber-reinforced composite construction into a reliable strength-to-weight ratio you can depend on. Companions to the popular Harken Black Magic block line, these small, compact blocks work well with very high working loads for easy trimming.
- High strength-to-weight ratio block
- Harken’s most innovative blocks
- 30% lighter, 60% stronger than equivalent conventional blocks
- Smaller block for jib and mainsheet systems on high-performance dinghies
- Use for high-load control lines on small keelboats
- Stainless steel swivel shackle
- Sheave Diameter: 2 1/4" (57 mm)
- Max. Line Diameter: 3/8" (10 mm)
- Max. Working Load (MWL): 1584 lb. (720 kg)
- Breaking Load: 3300 lb. (1500 kg)
- Weight: 6.3 oz. (178 g)
- Length: 4 3/4" (121 mm)
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