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.

FootnoteMaximum working loads and breaking loads for blocks based on cam strengths.Sheave (mm)40 mmSheave (in)1 9/16inLength (mm)131mmLength (in)5 1/8inWeight (g)128 gWeight (oz)4.5 ozShackle pin (mm)4 mmShackle pin (in)5/32 inMaximum line (mm)6 mmMaximum line (in)1/4 inMaximum working load (kg)220 kgMaximum working load (lb)485 lbBreaking load (kg)735kgBreaking load (lb)1620 lb