Three different diameters enable you to choose the right suction cup for your display.
Details of the nipple diameter for each suction cup size can be found below:
Adhesive Plastic Card Holder Pockets Business Card Size
Memory Card Pockets with adhesive backing
Barrel Connectors for Ball Chain
Three Sided Poster Holder DL (1/3 A4) Size
Double Sided Poster Holder Portrait T Stand