Harken Carbo Fixed Double Block 381 – 29mm

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.FeaturesSingle fixed: Integral becket allows 2:1 or 3:1 purchaseGlass-filled nylon sideplates: Load-carrying curved bearing racesTriple w/cam: Compact cam arm supports high-load purchases of 5:1 or 6:1Cheek: Line-shedding, small mounting footprint and drain holesCommon uses: Outhauls, Cunninghams, Vang’s, Traveler controls, Barberhaulers, Flag halyardsDoubles/triples: U-Locks holds the swivel in front/side position, or lets block spin freelySpecificationsSheave diameter: 1 1/8″ (29 mm)Maximum line diameter: 5/16″ (8 mm)Maximum working load: 660 lb (299 kg)Breaking load: 1625 lb (737 kg)Length: 2 1/8″ (54 mm)Weight: 1.2 oz. (34 g)Technical FileInstruction Manual .input-wrapper a { text-decoration: none; / Removes underline / background-color: transparent; / Ensures no background color / } .input-wrapper a:hover { text-decoration: underline; / Adds underline on hover / background-color: transparent !important; / Removes grey highlight / }