Harken's Carbo AirBlocks® are 60% stronger and 30% lighter than Classic blocks. The nylon-resin sideplates are densely packed with long glass fibers for a compact block with a high strength-to-weight ratio. Sheaves spin on high-load ball bearings with fitted races for low-friction operation. Ball bearings, sheave, and sideplates are UV-stablized for maximum protection.
Companions to the popular Harken® Black Magic® line, these small, compact blocks have very high working loads for safe, easy trimming. Use for jib and mainsheet systems on high-performance dinghies and for loaded control lines on small keelboats. Other common uses are mainsheet fine-tune, vangs, cunninghams, and outhauls.
Swivel blocks can lock in two directions or spin freely.
|Sheave Diameter||1 9/16 in||40 mm|
|Max Line Diameter||3/8 in||10 mm|
|Max Working Load||970 lb||440 kg|
|Breaking Load||2,380 lb||1,080 kg|
|Shackle Pin Diameter||3/16 in||5 mm|
|Weight w/ Shackle||3.2 oz||86 g|
|Length||3 11/16 in||94 mm|