Harken #HSB378 is a 57 mm triple fiddle with reinforced cam arms that is used for 12:1 mainsheet systems on beach cats.
Low-friction Carbo AirBlocks® are lightweight, strong, reliable and affordable. Companions to the popular Harken® Black Magic® line, these small, compact blocks have very high working loads for safe, easy trimming.
- Sheave Diameter: 2-1/4″
- Length: 6″
- Maximum Line Diameter: 3/8″
- Shackle Pin Diameter: 1/4″
- Maximum Working Load: 2380 lb.
- Harken #HSB378
Note: Maximum working loads and breaking loads for blocks are based on cam strengths.
Special order item.