The image hanging strips come in a set of 12, containing four pairs of medium and eight pairs of large white Command picture hanging strips The four medium pairs of strips can carry 5.4 kg weight and a frame size of 45.7 x 60.9 cm The four large pairs of strips can carry 7.2 kg of weight and frame size of 60.9 x 91.4 cm Command image hanging strips are easy to use, and they keep your walls looking great by avoiding holes, scuffs, and sticky residue Without using nails or a hammer you can hang picture frames, wall art, mirrors, wall clocks, signs, dry erase boards, holiday decorations, acoustic foam boards, and other home decor with these hanging strips Command strips are effective on a wide range of indoor surfaces, including painted walls, finished wood, painted concrete cinder block, laminate, glass, tile, metal, and other smooth surfaces