12mm dots, 300 dots per box.  
 
Removable dots are double-sided adhesives that bond instantly and stick around as long as you need. They are repositionable and can be esaily removed at any time from most clean, dry surfaces including painted walls, plaster, paper, cardboard, wood, plastic, glass, metal and more. Unlike other tapes and putties glue dots remove cleanly and won't damage most surfaces.