General description The 20 Pairs Scratch Double Sided Sticker features an extra strong adhesive backing, making it ideal for a variety of applications both indoors and outdoors. These double-sided sticky pads are versatile and can be used on smooth and flat surfaces such as painted wallboard, glass, metal, and most plastics. They are perfect for homes, offices, schools, and craft projects, including floors, rugs, sheets, seats, car mats, and cushions. Technical specifications Color: Black Size: 50mm round Material: Polyester / Nylon Quantity: 40 x Round Adhesive Pads Installation Ensure the adhesive surface is clean and free from stains and oil. Avoid using on hairy, lumpy, dirty, or powdery surfaces as they may weaken adhesive strength. If the surface has wax, clean it before applying the adhesive. After fixing the rubber surface, allow 12 hours for optimal adhesion. In temperatures below 0°, use a hair dryer as needed to improve adhesion.