75 mm Black Magic® AirBlocks® feature Torlon® roller
bearings for strength and reduced wear. The unique
center cage separates rollers for less friction. Sideload ball
bearings are protected by sculpted aluminum sideplates.
Dissimilar metals are isolated to minimize corrosion.
Low-load blocks use Delrin® rollers and type 316 stainless
Like all AirBlocks®, the three-way head swivels/locks in
front/side positions. Blocks are easily disassembled
with a single Allen wrench.
Use straphead blocks with LOUPS or straps aligned
fore/aft or side to side.
Sheets, Halyards, Running backstays and Control lines.
Part Number: 3231