We Ship Worldwide! | FREE SHIPPING! for US Continental orders over $99. Click for details.

Win The Golden Ticket

Receive a coupon for the same amount as your purchase

Harken  |  SKU: HAR3217  |  Manuf. Code: 3217

Harken Block - Black Magic 57mm Double - Swivel

$398.00 USD $497.50

Description

The Black Magic 57mm Double - Swivel #3217 is perfect for those who want reliable performance in their sailing adventures. Known for being lightweight and easy to handle, this double block is a top choice among big boat racers and cruisers. With its unique swivel action, it helps keep your lines from getting tangled, making your sailing smoother and more efficient.

Features & Benefits

  • Lightweight design for easy handling
  • Swivel feature prevents line twisting
  • Torlon® roller bearings for reduced friction
  • Ideal for mainsheet, runner, halyard, and spinnaker systems

Crafted with a center cage to keep Torlon® roller bearings separated and parallel, this block minimizes friction for efficient operation. Specifically designed for big boats, it is a perfect match for various sail controls. The block is well-suited for demanding environments, offering durability and reliability when you need it most.

Usage

Best used in scenarios requiring frequent line adjustments, such as racing or cruising. Ideal for controlling mainsheet, runner, halyard, and spinnaker systems efficiently.

Technical Information


DescriptionImperialMetric
Sheave2 1/4 in.57.00 mm.
Length5 1/5 in.132.00 mm.
Weight11.85 oz.336.00 gr.
Maximum Line1/2 in.12.00 mm.
Maximum Working Load3600.00 lb.1633.00 kg.
Breaking Load7203.74 lb.3267.00 kg.
Shackle Pin1/3 in.8.00 mm.