To use, clean and dry both surfaces. Peel backing paper and press firmly to surfaces. Allow 15 minutes to set (or longer for heavier items) before attaching hook and loop. Adhesive reaches maximum strength after 24 hours.An alternative to nails and screws for securing items such as large pictures, mirrors and tools, in and around the home.Key benefits include;-. Very strong Self-adhesive backing. High-tech moulded hook equals 50% stronger closure system than regular hook & loop. Ideal for outdoor use. A 50mm length of this product will hold up to 7kg!. Easy to use and high holding power indoors and out. Alternative to nails, screws & gluesThe VELCROR Brand Heavy-Duty Stick On Tape comes in a pack of 2, blackSize 50 x 100mm