Suction Cups for Punched Hole Signs with Thumb Screw. 32mm x 20 pack
 Adams 32mm suction cup is rated to hold one pound (0.45kgs) in weight.
These Adams suction cups with plastic hand screws, fix signs, foamex and other display boards up to 7.5mm in thickness very securely on glass or any other flat, clean, dry, slick/shiny non porous, non textured surfaces like mirrors, glossy plastic and plain glazed ceramic tiles.
To fix a thin board- snip a little off the end of the thread with a finger nail cutter.
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