EcoVantage Marine Catalog

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Harken 75 mm Black Magic, AirBlock Spriddle block/becket
Cat. No. HAR 3242
Weight 2 lbs


Use 75 mm Black Magic® AirBlocks® on offshore boats. are 60% stronger and 30% lighter than our classic blocks.

The nylon resin sideplates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Ball bearings, sheave and sideplates UV stabilized with black additive for maximum protection.

Blocks feature Cam-Lock or U-Lock locking systems to lock the shackle in front or side positions, or swivel to keep line from twisting.

The 75 mm Carbo has a safe working load of 1200 lbs (500 kg). It releases easily under load and is perfect for mainsheet systems on sport boats like the Melges 24, J/105 and Henderson 30.

Use for:
Main/jib sheets
Mainsheet fine-tune
Control lines

Description Spriddle block/becket
Sheave dia. (mm) 75mm
Length (in) 8 7/8
Weight w/shackle (oz) 16.8
Shackle pin dia. (in) 5/16
Max. line dia. - optimal (in) 1/2
Max. line dia. - max. (in) 9/16
SWL (lb) 5000
Breaking strength (lb) 10000


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