Your Hatsbi magnetic zip tie holders are ideal for strapping wire to metal areas and eliminating cable clutter. These professional strength cable zip tie mounts simply attach to any magnetic surface and hides cables from computers, electronics and appliances. Your triple plated (NiCuNi) permanent Neodymium magnets are ideal for strapping cables to metal areas. Ideal for indoors as well as outdoors. Included in this offer are the 12 black plastic standard zip ties. Each individual black magnet in your 12 pack of magnetic cable zip tie mounts have the dimension of 1 cm x 1.9 cm with a diameter of 18.70mm. The bearing strength for each magnet is 10 pounds.