Harken 57 mm Black MagicŪ High-load Doubl footblock Cat. No. HAR 3222 Weight 1 lbs
1964 57 mm High-load Double Foot Block
Black Magic® footblocks carry some of the highest loads imposed by
running rigging. The Torlon® rollers on these lightweight,
blocks are housed in a center cage, with no contact between bearings.
UV-resistant, carbon-black Delrin® balls handle sideloads.
Either metric or imperial flathead fasteners may be used for mounting
and are not exposed.