Harken 100 mm
Black Magic®
AirBlocks®




Used on offshore boats where weight and performance are critical.

They feature free-rolling, large- diameter 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.Blocks are Hardkote-anodized and have 17-4 PH stainless headposts and shackles. Easily disassembled.The 3199 soft attachment Loop block has a removable dead-end post for attachment to a padeye. Lashings can also be used.

Use for:
  • Sheets
  • Halyards
  • Running backstays
  • Control lines




  • Harken 100 mm Aluminum Block - Swivel
    Harken 100 mm Aluminum Block - Swivel

    Harken 100 mm Aluminum Block - Swivel Becket
    Harken 100 mm Aluminum Block - Swivel Becket

    Harken 100 mm Aluminum Double Block - Swivel
    Harken 100 mm Aluminum Double Block - Swivel

    Harken 100 mm Aluminum Stand-up Block
    Harken 100 mm Aluminum Stand-up Block

    Harken 100 mm Aluminum Loop Block
    Harken 100 mm Aluminum Loop Block