Adhesive Hook and Loop Dots The round pad measures about 20mm in diameter, the package includes 504 hooks and 504 loop pieces; 504 sets in total (300 pieces). Adhesive Velcro Material It is made of polyester and nylon, the backing material is plastic film, tear off without leaving any traces, without damaging the surface. The self-adhesive hook and loop tapes are moisture and weather resistant and are perfect for indoor and outdoor use. Easy to use Simply peel off the protective film on both sides and stick it wherever you want. (After sticking, please use it after 48 hours) WIDE APPLICATION Double-sided adhesive pads are suitable for all smooth and clean surfaces, such as plastic, glass, metal, and vehicle interiors, the back of mobile phones, etc. (Tips: Some surfaces will be destroyed by the strong adhesive) MULTIFUNCTION Can be used to fix mosquito nets, mattresses, and pillows. It can also replace screws to make some home accessories and help organize cables. Durable hook and loop fibers, ideal for long-term tool organization, hanging, mounting, displaying ornaments, storage, and many other household utilities.