Harken Carbo Air Blocks - 29mm

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.

• Sheave Diameter: 29mm
• Tough, fibre reinforced composite construction
• Open 'Air' profiling cuts out unnecessary weight
• Delrin acetal resin UV stabilised ball bearings
• Free running ball bearings on curved races for low friction efficiency and high load dispersal
• U-Locks on double and triple sheave blocks - holds the swivel in front/side position or allows free spinning
• Compact cam arm supports high-load 5:1 or 6:1 purchase on triple sheave blocks
• Line shredding cheek block with small mounting footprint and drain holes