Suction Cups with Thumb Screws. 64mm x 100 pack
Fix to glass or any other flat, clean, dry, slick/shiny, non textured, non porous surfaces like mirrors, glossy plastic, glazed ceramic tiles or car body work etc.
Adams large suction cups with plastic hand screws fix heavier signs and other items up to 7.5mm in thickness.
Each 64mm Adams large suction cup is rated to hold 7 pounds (3.2kgs) in weight.
To fix a narrower sign - snip a little off the end of the thread with a finger nail clipper.