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Harken, Inc.

Harken 57mm Aluminum Double Block — Swivel, Becket - #3218

Harken 57mm Aluminum Double Block — Swivel, Becket - #3218

SKU:H3218

Regular price $491.95 USD
Regular price MSRP:$559.35 USD Sale price $491.95 USD
Sale Available to Order - Contact for Lead Time
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  • Quantities are subject to availability. We will confirm stock before processing your order. If an item is unavailable, we may suggest a substitute or drop ship the product to you. You are welcome to cancel at no charge if substitution/drop shipping does not suit your needs. Please note cut-to-length rope orders are non-returnable once cut.

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: mainsheet, runner, halyard, and spinnaker systems. A center cage keeps Torlon® roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep line from twisting.

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

Sheave ⌀ : 2 1/4"   (57 mm)
Length: 6"   (152 mm)
Weight: 12.43 oz   (352 g)
Max Line ⌀ : 7/16"   (12 mm)
Max Working Load: 3600 lbs   (1633 kgs)
Breaking Load: 7200 lbs   (3267 kgs)
Shackle Pin ⌀ : 5/16"   (8 mm)
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