Description The package contains: hook surface *10, rough surface *10, a total of 20 pieces. A piece of rough surface and a piece of hook surface are a pair, a total of 10 pairs. Size: length 10cm, width 3cm. black. Easy to use and disassemble: no nails or other tools required. Double-sided self-adhesive design, no additional glue or adhesive is required. You can hang paintings without holes on smooth surfaces that cannot be drilled or do not want to be drilled. Tear without a trace. Instructions for use: Clean and dry the surface during use. Tear off the wax paper on the back, then firmly stick the hook or wool side to the desired position. In the same way, firmly glue the wool side to the opposite end of the hook or wool side. Try to align both sides You can start using it. Versatile: Can be cut to any length and shape you want and need. Suitable for smooth surfaces in homes, classrooms, offices, cars, etc., such as glass, ceramic tiles, plastics, metals, mirrors. Due to its strong adhesion, it is not suitable for plush fabrics, brick walls, concrete walls, silty walls, painted walls and oily polymer surfaces.