This accessory for Selden GX7.5 furler.
Enables the sailor to easily trim the luff of the gennaker.
The Adjustable Tack Swivel slides up and down over the AT-cable and is handled from the cockpit with a down haul.
As opposed to trimming the luff by slacking the halyard, the AT-cable can now be permanently tensioned and always ready for furling.