Features: - new and high quality - Made of high quality materials, durable - 10x TDK Ferrite Core Noise Suppressor Filter Ring 5mm Diameter Cable Clamp RFI EMI - Ideal for noise cancellation on USB, Firewire, Phone, Powerline, Coaxial, Audio and Video cables. - Just clip on the cable and you will get a clearer signal - Widely used in computers, hard disks, audio equipment, copiers, fax machines, etc. - Fits 5mm diameter cables Product parameters: - Dimensions: 12 x 25 mm - Rectangle ratio: 20 - Coercivity: 16 (A/m) - Remanence: 200 (mT) - Curie temperature: 130 () - Density: 4.9 (g/cm3) - Applicable wire diameter: 2.5-4.5mm - Function: Anti-jamming - Material: Soft Magnetic - Color: Black, gary(optional) - Quantity: 10 pieces, Package Included: 10x TDK 5mm ferrite core noise suppression filter ring (optional) Notes: 1. Due to various factors such as display brightness and light brightness, the actual color of the product may be slightly different from the website picture. 2. Please allow a slight deviation between the data and the manual measurement.