So here is my handle for a the pelipal washbasin.
I use fusion threads (the hole diameter is 5,6 mm and the depth is 7mm) and a soldering iron to attach the handle with the closet door.
Soldering Iron:
https://www.amazon.de/dp/B0B1TKJSS2?psc=1&ref=ppx_yo2ov_dt_b_product_details
Fusion Threads (M4x6x6):
https://www.amazon.de/dp/B0CDQ3C524?psc=1&ref=ppx_yo2ov_dt_b_product_details
Fusion Thread Adapter:
https://www.amazon.de/dp/B0CDBSGSXY?psc=1&ref=ppx_yo2ov_dt_b_product_details
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