About this item TACK IT - Removable, reusable Non-Toxic, Wall safe mounting putty, will not leave a mark or stain Each pack come with ready cut block for easy tear off. Each block approximately 1/2 inch long by 2/5 inch wide, total 120 blocks Multipurpose use in Office, Home, school. mount wall posters. Adheres paper and small objects to most materials and surfaces including wood, tile, glass, metal, plaster, plastic, porcelain, cinderblock, hanging pictures and more Tear off amount from…