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.

Maximum working loads and breaking loads for blocks based on cam strengths.Sheave (mm)40mmSheave (in)1 9/16 inLength (mm)102mmLength (in)4 inWeight (g)122 gWeight (oz)4.3 ozShackle pin (mm)4 mmShackle pin (in)5/32 inMaximum line (mm)6 mmMaximum line (in)1/4 inMaximum working load (kg)136 kgMaximum working load (lb)300 lbBreaking load (kg)272 kgBreaking load (lb)600 lb