I think you are looking for something like this. https://www.jalousiescout.de/gurtwickler/elektrische-gurtwickler/jaromat-eco-ap-15-5.html https://www.jalousies

I think you are looking for something like this. https://www.jalousiescout.de/gurtwickler/elektrische-gurtwickler/jaromat-eco-ap-15-5.html https://www.jalousiescout.de/gurtwickler/elektrische-gurtwic... I believe most tool stores (OBI, Bauhaus) have them. At least here in Austria.