Features: - Brand new and high quality - Made of high quality material, durable - 5x TDK Ferrite Core Noise Suppression Filter Ring Cable Clamp RFI EMI - Noise cancellation for 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 drives, audio equipment, copiers, fax machines, etc. - New clip-on ferrite toroids help reduce EMI on AC power lines. - Widely used design, rectangular ferrite bead - 5 different sizes 3.5mm, 5mm, 7mm, 9mm, 13mm - Double snaps for easy installation, ferrite core with plastic cover - Reduces EMI and improves signal integrity Specification: - Type: 3.5mm, 5mm, 7mm, 9mm, 13mm (optional) - Quantity: 5pcs - Function: anti-jamming - Product Name: Nickel Zinc Ferrite - Magnetic ring: 3-15mm - Saturation Magnetic Induction: 400 - Initial permeability: 1000 - Rectangular ratio: 20 - Coercivity: 16 (A/m) - Remanence: 200 (mT) - Curie temperature: 120 (℃) - Density: 4.9 (g/cm3) - Function: anti-jamming - Material: soft magnetic - Colour: Black - Material: magnet, plastic Package Included: 5* Noise filter (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. Perfect functions,give you a wonderful experience. Every customer can enjoy 30 days refund or replacement for Damaged/Quality Issues. If you have any questions, please feel free to contact us, we will solve it for you. 5X3.5/5/7/9/13Mm Toroidal Core Ferrite Bead Clip Choke Emi Rfi Noise Filter Clip