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
Blocks are Hardkote-anodized and have 17-4 PH
stainless headposts and shackles. Easily disassembled.
Sheets, Halyards, Running backstays and Control lines.
Part Number: 1993