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.
Like all Air Blocks, the three-way head can be locked in either direction or can swivel freely to keep line from twisting.
Sheets, Halyards, Running Backstays, Control Lines
|Sheave Diameter||3 15/16 in||100 mm|
|Max Line Diameter||5/8 in||16 mm|
|Max Working Load||11,000 lb||4,990 kg|
|Breaking Load||22,000 lb||9,979 kg|
|Weight||45.28 oz||1,284 g|
|Length||8 15/16 in||227 mm|
|Shackle Pin Diameter||1/2 in||12 mm|