EXTRA STRONG SELF-ADHESIVE VELCRO TAPE: 8m loop tape and 8m hook tape. Each roll is 8m long x 20mm wide. Backed with a strong special adhesive. Adhesive reaches maximum strength after 24 hours. Please wait 24 hours before pressing the hook and loop strips together to connect the two objects. A permanent and long-lasting fastening solution for the home, classroom, office and garage! IDEAL FOR SMOOTH SURFACES: Trusiel self-adhesive velcro fasteners are perfect for smooth surfaces such as plastic, glass, tiles, plastic, metal, mirrors and smooth wood. NOT SUITABLE FOR leather, PU, synthetic leather, thick cloth, plush fabrics, brick wall, concrete wall, gritty wall, polymer and oily surfaces. Not recommended for fabrics, flexible vinyl or underwater use. STRONG ADHESIVE: The self-adhesive backing is strong and of high quality. It leaves no residue after being torn off smooth surfaces. DO NOT expose to heat or sunlight, as prolonged exposure to sunlight may damage the fastener and leave residue. Clean and dry the surface before applying. NO TOOLS REQUIRED: No hammer, drilling, nails, or epoxy necessary. Hook and loop fasteners can be cut to the desired size. Durable hook and loop fibers make it ideal for long-term tool organization, hanging, mounting, ornament display, and storage.