5 Piece, .75"D x.060" Thick, Super Magnet Disc With Foam Adhesive, North Out, No Glue Is Needed, Just Peel Off The Adhesive Liner & Stick, Full Cure 24 Hours, Industrial Strength Acrylic Foam Adhesive Conforms To The Irregularities Of Rigid Substrates & Adheres The Magnet To A Multitude Of Materials Including Wood, Plastic, Ceramic, Rock, Paper & Much More, North Pole Facing Out.