Suction cups with screw stud nut
For thicker signs, posters, perspex, foam board.
between 2mm and 7.5mm in thickness.
Sizes from 30mm – 80mm diameter.
https://www.isuctioncups.com/suction-cups-screw-and-nut/
country of origin: germany
weight: 10kgs
size (dia): 50mm