125 mm and 150 mm AirBlocks® feature Torlon® rollers in a
self-contained center cage. Rollers stay parallel for low-friction
efficiency. UV-resistant, carbon-black Delrin® balls carry sideloads.
Used on offshore boats, these blocks offer a no ''climb-ou'' deep
groove sheave with radiused edges to protect line. Sculpted aluminum
sideplates and thin-profile sheaves make these blocks very lightweight.
No stainless-to-aluminum contact prevents corrosion.
Sheets, Halyards, Running backstays and Control lines.
Part Number: 3021