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DESCRIPTION

Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action.

Sideplates and sheaves Hard Lube-anodized for maximum UV protection and a smooth surface. Center cage keeps Torlon® roller bearings separated and parallel to reduce friction.

Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.

Our Part # HAR3227 | Mfr. Part # 3227

FEATURES

  • Single sheave stand-up block.
  • Keeps block upright.
  • Prevents line fouling.
  • Robust Black Magic construction.
  • 57mm sheave diameter.

TECHNICAL INFORMATION

DescriptionImperialMetric
Sheave2 1/4 in57.0 mm
Length4 1/2 in114.0 mm
Weight7.1 oz200.0 g
Maximum Line1/2 in12.0 mm
Maximum working load2500.47 lb1134.0 kg
Breaking load5000.94 lb2268.0 kg
Fasteners1/4 in6.0 mm
Fasteners Circle1 1/2 in37.0 mm
A2 1/4 in57.0 mm
B2 3/16 in56.0 mm
C1 1/4 in32.0 mm
IncludesPadeye

KNOWLEDGE BASE

Harken Mastbase & Cabintop Block Selection GuideHarken part numbers for leading halyards aft from the mast (1, 3 or 6 halyards and over-the-top layouts) on small.View Selection Guide →

Click here for the Owners Manual.