Harken 100 mm Black Magic® Double Block — Swivel Cat. No. HAR 3248 Weight 2 lbs
3010 100 mm 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.