Beiter Winder Twister Attachment
The Twister is an accessory for the Winder and the Profi Winder.
The Twister may help you in different ways, for example:
On one side it stabilizes 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 losing tension if you served too much or in the wrong way.