Easy to InstallThe cable clamp simply removes the paper and sticks the adhesive, so no extra tools are required. Easy to install on various surfaces such as tables, walls, plastics, wood, glass, metal, etc.^ High quality 3M 9448A double-sidedUse 3M adhesive without drilling. Please keep the surface clean and dry to ensure maximum adhesion.^ Versatile line clipis used to store and manage various types of lines (telephone lines, outside lines, USB lines, office lines, charging lines, car lines, TV lines, etc.) to provide you with a clean environment.^ 20 Pcs Cable Managers per BoxCable diameter 0.7cm(Max), sized to fit most cables, small size and space saving.^ Precautions Before UseMake sure the mounting surface is clean and free from dirt, dust, grease and wax.^