The entire line of Harken Black Magic AirBlocks has been redesigned with
a sleek new look. Their unique, performance-packed engineering remains
exactly the same.
Carrying some of the highest loads imposed by running rigging, these strong,
lightweight Harken Footblocks feature Torlon roller bearings
housed in a center cage. Rollers stay parallel for low-friction efficiency.
aluminum sideplates protect sideload ball bearings. Dissimilar metals are
isolated to minimize corrosion. Blocks are easily disassembled with a single
Either metric or imperial flathead fasteners may be used for mounting and
are not exposed.