VELCRO Brand Sticky Back hook and loop fasteners deliver strong holding power. Simple peel and stick application. For smooth surfaces such as painted wallboard, glass, metal and most plastics, can be used for indoor or outdoor applications. VELCRO Brand is the original hook and loop fastener. Much better durability and strength than other off brand fasteners. They are available in squares, coins, strips, and tapes and come in a range of different sizes and colors. A must have for any home, school or office. Great for organization, mounting, hanging, and securing. Instructions:1. Clean and dry surface before application.2. Peel tape from fastener and press firmly into place.3. Adhesive reaches maximum strength after 24 hours. Note: Not recommended for fabrics, flexible vinyl or underwater use. Continued exposure to full sunlight can damage fastener..