75mm Carbo Air® Flip-Flop Block
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HARKEN75mm Carbo Air® Flip-Flop Block


Fulfilled from vendor
Model # 9485749 | Mfg # 2678UPC # 97653186861
75mm Carbo Air® Flip-Flop Block




75mm Carbo Air® Flip-Flop Block

Name Value
Ball Bearings Plastic
Becket No Becket
Diameter 9/16 Inch or 14 mm
Direction Any
Integral Cleat No Integral Cleat
Length 5 5/8 Inches
Mount Type Mechanical Fasteners
Ratchet Non Ratcheting
Safe Working Load 1213 Pounds
Sheave Diameter 75 mm
Type Single Pivoting
Weight 9.7 Ounces

Product Overview

Small Boat Flip-Flop blocks pivot around the line axis to keep the line close to the deck. 

Harken 75mm Carbo Air® Flip-Flop Block with hinged construction allows for various lead angles. Lightweight, machined 6061-T6 aluminum cheeks pivot on fiber-reinforced plastic chocks. Sheave runs exclusively on a ball bearing system for fast trim and release under any load. Ball bearings, sheave, and sideplates are UV stabilized with carbon black for maximum protection.

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.

Key Features 

  • 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: 3" (75 mm)
  • Max. Line Diameter: 9/16" (14 mm)
  • Max. Working Load (MWL): 750 lb. (340 kg) 
  • Breaking Load: 2426 lb. (1100 kg)
  • Weight: 9.7 oz. (275 g)
  • Length: 5 5/8" (143 mm)


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