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Harken 75mm Black Magic Low-Load Swivel Block

$369.55 $324.99
(You save $44.56)
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Harken 75mm Black Magic Low-Load Swivel Block

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.

Use for:

Sheets, Halyards, Running Backstays, Control Lines



  Imperial Metric
Sheave Diameter 2 15/16 in 75 mm
Max Line Diameter 9/16 in 14 mm
Max Working Load 3,000 lb 1,361 kg
Breaking Load 6,000 lb 2,722 kg
Weight 11.82 oz 335 g
Length 5 1/8 in 129 mm
Shackle Pin Diameter 5/16 in 8 mm