Harken's Black Magic Air Runner accessories include runner heads, tangs, and socks to facilitate aligning and protecting blocks. Heads are offered with parallel or perpendicular shackles. Tangs attach turnbuckles, toggles, and other fittings. Foam padded Block Socks easily install over Air runners to protect your blocks, deck, and crew.
No tools are required for installation. Usually, strong fingers and a good grip do the trick.