Features: - brand new and high quality - Made of high quality materials, durable - 10x TDK Ferrite Core Noise Suppression Filter Rings 3.5mm-13mm Diameter Cable Clips 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 many cable diameters Product parameters: - Dimensions: 12 x 25 mm (5mm) - Models: 3.5mm, 5mm, 7mm, 9mm, 11mm, 13mm (optional) - Rectangle ratio: 20 - Coercivity: 16 (A/m) - Remanence: 200 (mT) - Curie temperature: 130 (℃) - Density: 4.9 (g/cm3) - 5mm applicable wire diameter: 2.5-5mm - Function: Anti-jamming - Material: Soft Magnetic - Color: Black, (optional) - Quantity: 10 pieces, (optional) Package Included: 10x TDK 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 materials, durable 10x TDK Ferrite Core Noise Suppression Filter Rings 3.5mm-13mm Diameter Cable Clips 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.