1. Conceptual Adhesive Tape: Our clear double sided tape heavy duty is made from acrylic material, which provides strong stickiness and leaves no residues. If you want to make changes without any nails on surface, try this double sided tape for walls. 2.Removable Washable Traceless: The removable double sided tape will not damage smooth and strong surfaces, it's residue and recyclable. When double sided mounting tape gets dirty, wash it and dry it to regain adhesion, then you can use this wall tape again. 3.Multipurpose Use: 2 Packs: Length 12m(20ft2), Width 30mm(1.18in), Thickness 2mm(0.08in). The heavy duty double sided tape meets different needs. You can use it as wall sticky for hanging objects, like posters, storage units, frames, decors. DIY ideas can be achieved anytime. 4.: 1. Use alcohol pad to clean the surface 2. Cut sticky tape to needed size 3. Peel off the protective film 4. Stick two sided tape on the item and attach it in place. Notes: be cautious when using on painted walls, it may peel off the paint when removing.