Features: - brand 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: 2.5-5mm - 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. Made of high quality material, durable and practical to use Brand new and high quality Good function and reliable to use We will ship it ASAP,when you place the order We provide perfect customer service, you can buy with confidence. If you have any questions about our products, you can feel free to contact us.