@leDamien
We tried these ones:
https://www.amazon.de/gp/product/B00K2QW2KI/ref=oh_aui_detailpage_o06_s01?ie=UTF8&psc=1
https://www.amazon.de/gp/product/B0096Y2HFW/ref=oh_aui_detailpage_o06_s01?ie=UTF8&psc=1
best
Gianfranco