Skip to content Skip to navigation menu
Live Chat
100mm Black Magic® AirBlocks® Double Block Clearance

HARKEN
100mm Black Magic® AirBlocks® Double Block

36% Off

$444.77

Original $704.99 Price Details

Model # 6583348 | Mfg # 3009
Limited availability.

100 mm Black Magic® AirBlocks® are used on offshore boats where weight and performance are critical. They feature free-rolling, largediameter aluminum sheaves with Torlon® roller bearings housed in a unique center cage. UV-resistant, carbon-black Delrin® balls carry sideloads. Corrosion is minimized by isolating dissimilar metals.

  • Used for sheets, halyards, running backstays and control lines.
  • Blocks are Hardkote-anodized and have 17-4 PH stainless headposts and shackles. Easily disassembled.
  • 1/2" shackle pin
  • Maximum line: 5/8"
  • Breaking strength: 22000 lb.
  • Load capacity: 11000 lb.
  • Length: 8-15/16"
  • Weight: 48.3 oz.

West Advisor

The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.