Multicraft Adhesive 3D Square Foam Mount Pop Dots - 3/8" - 240 Pcs. I bought these for the most amazing price for 240 pop dots for your ATCs and more. Multicraft Adhesives supply you with a wide range of glue, tapes, mounts, and more for all your crafting needs. 3D Pop Dots 3/8" Square Foam Mount 240 pcs .- Double sided adhesive foam squares measure approximately 3/8"x 3/8". They are photo safe and great for creating a 3 dimensional effect with your ATC cards and paper projects.