The Harken Black Magic Air Blocks have been redesigned with a sleek new look. Their unique, performance packed engineering remains exactly the same.
Used on offshore boats, these strong, lightweight blocks feature free-rolling, high load Torlon® roller bearings for a high strength-to-weight ratio and reduced wear. Rollers are housed in a center cage and stay parallel for low-friction efficiency. Sculpted hardcoat-anodized aluminum sideplates protect sideload ball bearings. Dissimilar metals are isolated to minimize corrosion.
The soft attachment Loop block has a removable deadend post for attachment to a padeye. Lashings can also be used. Soft Loop attaches securely through sheave center.*
*Loop not included.
|Sheave Diameter||2 1/4 in||57 mm|
|Max Line Diameter||7/16 in||12 mm|
|Max Working Load||2,500 lb||1,134 kg|
|Breaking Load||5,000 lb||2,268 kg|
|Weight||3.23 oz||92 g|
|Length||3 in||76 mm|