Carbon Fiber Slim Line adjustable Goosneck-11.1 mm masts

Imported from Italy, This Carbon Fiber offset gooseneck provides fine vertical axis adjustment for downwind Mainsail twist. This gooseneck is designed specifically for 11.1 mm Aluminum masts fitting into shallow cup IOMs. 

This adjustable  Goosneck allows the variation of the offset position of the axis of rotation in order to optimise the mainsail leech tension.
It can be used as normal gooseneck by putting zero offset on the control screw.