Premium Quality: The black magnetic zipper holders are made of magnets, A3 steel, rubber and nylon, sturdy and reliable in quality, and the good magnetism prevents them from falling off easily from metal surfaces. Nice Performance: Our black magnetic zipper holders are practical accessories for fixing and organizing your various wires and cables, which can reduce cable clutter and bring you neat conditions. And the magnetic bases are designed with protective rubber, which can improve the lateral load-bearing capacity, keep the magnets clean and protect the localized surfaces from scratches. Easy to Use: The black magnetic zipper holder is convenient to use, just attach them to metal areas, insert the zip ties to tie the cables or wires, then tighten them and cut off the excess length. They are removable and you can easily adjust the positions and angles according to your needs. Wide application: magnetic cable holders can keep your electronic cables, USB cables, computers and other electrical cables or decorations in order, suitable for use in homes, offices, classrooms, and more. You can apply it to cars, machines, lighting lamps, shelves and other smooth surfaces. What you get: you will receive 20 pieces magnetic cable ties, each magnet can support a maximum vertical pull of about 8.5 kg, providing sufficient quantity and bringing more convenience to your daily life.