Protect your walls and projects with ArtSkills Poster Tack. This reusable adhesive putty is perfect for hanging posters, signs and more, all without ruining your walls. It is easily removable and makes a great alternative to tape, pins, staples and nails. Instructions: For maximum holding strength, pull off a section of putty and knead until it's soft and sticky. Then apply to all 4 corners of your poster and press firmly to the wall to instantly hang it!