1.Glue Tack mounting tabs are removable, reusable, fun, safe, effective and easy to use. 2.Use instead of nails, push-pins, tape or glue. Pre-formed into tabs ready for temporary or permanent mounting, hanging /stabilising of posters, photos, Frames, artwork & more! 3.Will adhere to most clean, dry, porous & non-porous surfaces. 4.Putty will not dry out, is non-toxic, and holds up to 1lb can be reused again & again.