Questions about Hansa Telephone swivel arm

This is what the manufacturer says: The 18.5 x 26 cm support plate with continuously height-adjustable adhesive cubes provides a secure support for a wide variety of telephone devices weighing up to 3 kg. We have no further information.

This holder is attached directly to the table (screwed) Source: https://shop.hoell.de/Hansa-Technik-Telefonschwenkarm-TSA-5020-5020002

Unfortunately, we are not yet able to procure them from our suppliers.