![Harken 40mm Carbo Air Fiddle Block w\/Swivel Becket Harken 40mm Carbo Air Fiddle Block w\/Swivel Becket](https://cdn11.bigcommerce.com/s-pr9amv4/images/stencil/200x200/products/67374/92584/79076XL__42264.1558476573.jpg?c=2)
40mm Carbo Air Fiddle Block with Swivel
Low-friction Carbo Air blocks 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. The 40 mm fiddle is an excellent choice for 3:1 and 4:1 tackles on dinghy vangs and mainsheets, as well as for controls such as cunninghams and internal boom outhauls on larger boats.
Specifications: