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. 10xTDK Ferrite Core Noise Suppressor Filter Ring Cable Clip On Wire RFI EMI Materials: Made of high quality materials, robust and durable, safe and convenient to use. Size: matched to the corresponding model to match your working tool needs, check if it is the size you need before you buy. Function: This is a good companion you need on your tools, giving you a more convenient working life, in case you are busy indoors and outdoors Satisfaction guarantee: Your purchase is fully protected when you order today. If you are not satisfied with with our products, contact us any time, We will get you back within 24 hours try our best to make things right.