Low-friction Carbo AirBlocks® are lightweight, strong, reliable and affordable. These are features all sailors look for when choosing sail controls and a real breakthrough in block design. Companions to Harken’s® popular Black Magic® line, these small, compact blocks have very high working loads for safe, easy trimming no matter how hard the wind blows. 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 UV stabilized with black additive for maximum protection. Carbo blocks are perfect for the small-diameter hard lines favored by racers.
Carbo AirBlocks® are 60% stronger and 30% lighter than Harken's classic blocks. Use the 40 mm Carbo for jib and mainsheet systems on high-performance dinghies and for loaded control lines on small keelboats.
Use for: Main/jib sheets, Mainsheet fine-tune, Control lines, Vangs, Cunninghams, Outhauls
Sheave dia.: 1-9/16 in (40 mm)
Length: 2-1/2 in (64 mm)
Weight w/shackle: 1.4 oz (40 g)
Max. line dia.: 3/8 in (10 mm)
Max. working load: 485 lb (220 kg)
Breaking load: 1620 lb (735 kg)
Can also be used as a becket block.