[HK-3219] HARKEN 57 mm Aluminum Triple Block — Swivel

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Description

[HK-3219] HARKEN 57 mm Aluminum Triple Block — SwivelBlack 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

new furled sail slides and locks into T-slot

The adjustable bottom foil fine-tunes the system length

Switch system track is machined or extruded from 6061-T6 aluminum and hardcoat-anodized for a long-lasting surface

The patented bearing system uses stainless steel balls in a captive grooved race and has a 250 lb (113 kg) maximum working load

These lightweight

The low-load block has a red isolator

you may want to maintain your winches before every regatta

You should service your winches at least once during the preseason

Runners are used on running backstays of offshore boats to adjust mast bend for different wind conditions

Shackle blocks lock in two directions or swivel to keep line from twisting

belowdeck without having to drill holes

The quick-release modular T-fitting allows single drive unit to handle multiple sails