Harken 57mm Carbo Air® Cheek Block for clean deck organization and 180° line angles. 

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
• Sheave Diameter: 2 1/4" (57 mm)
• Max. Line Diameter: 3/8" (10 mm)
• Max. Working Load (MWL): 792 lb. (359 kg)
• Breaking Load: 2380 lb. (1079 kg)
• Weight: 2.4 oz. (68 g)
• Length: 3 5/8" (92 mm)