Made of high-quality iron and powerful neodymium magnet materials, each magnet has a vertical force of 12 pounds (on 0.05-inch thick steel plate), making it sturdy and durable. [Anti-Scratch Coated Magnet Base]--- rubber coating design keeps the magnet clean and protects the metal area from scratches. It increases friction to maintain a strong grip on the cable holder even in bad weather. Great for indoors and outdoors. [No Damage Cable Holder]---No glue, no drilling, no marks. Easily attaches to any magnetic surface. The strong permanent magnet makes it difficult to fall off from metal surfaces, ensuring long-term reuse. [Widely Used for Cable Management]---Small size, suitable for narrow spaces, suitable for managing wires hidden in the engine compartment area, fixing light strings, electronic wires, light wiring harnesses. It is a good helper for organizing wires in offices, warehouses, garages, and machines. Colour:black+silver Material:Metal Size: Diameter: 22mm Package Contents: 4 x Magnetic Cable Clips single 4 x double Magnetic Cable Clips Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.