allows you to roll up your gennaker
or asymmetrical spinnaker
just like your genoa
the anti torsion cable spins the top before the bottom making for a tight wrap of the spinnaker
around the cable
The overall length is 60' 6". there are U-tubes videos showing the operation.
Asking $2000 including a 750 sq ft asymmetrical 3/4 oz. All gear
is like new; used three times just to play with it.