The Twister is an accessory for the Winder and the Winder PROFI.
It can be ordered as a single spare part (and used an all Winders already on the market).
On one side it stabilises the serving jig - your Winder!, while serving.
Than it can be engaged and used as to serve the serving faster, tighter and more accurate.
A third option is that you can open the serving - without loosing tension, if you served too much or in the wrong way.