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Harken 100mm Black Magic Stand-Up Block

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Harken 100mm Black Magic Stand-Up Block
SKU #: HK_HAR3254

Regular Price: $778.35

Special Price $684.99

Availability: In stock

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

Includes Padeye




  Imperial Metric
Sheave Diameter 3 15/16 in 100 mm
Max Line Diameter 5/8 in 16 mm
Max Working Load 7,500 lb 3,402 kg
Breaking Load 15,000 lb 6,804 kg
Weight 31.18 oz 884 g
Length 7 11/16 in 195 mm
A (refer to picture) 3 21/32 in 93 mm
B (refer to picture) 3 27/32 in 97 mm
C (refer to picture) 2 5/16 in 59 mm

Includes Padeye - Uses hole spacing and base dimensions of 648 padeye.


Additional Information

Additional Information

Brand Harken
Gender No
Location No
Activity No
Material No
Max Working Load 7,500lb / 3,402kg
Max Line Diam 16 mm (5/8")
Length No