60 Pieces Clip-on Ferrite Ring Core RFI EMI Noise Suppressor Cable Clip for 3mm/ 5mm/ 7mm/ 9mm/ 13mm Diameter/Video Cable Power Cord (Black) Product Details Item Weight: 1.76 pounds Package Dimensions: 6.73 x 5.16 x 1.46 inches Country of Origin: China Item model number: 0822 Package Dimensions : 6.73 x 5.16 x 1.46 inches; 1.76 Pounds Item model number : 0822 Manufacturer : Tamicy Country of Origin : China Package included: 60 * cable clips (with 5 different size included) for cord with 3/ 5/ 7/ 9/ 13 mm inner diameter Ni-Zn ferrite. It can improve the electromagnetic field around the solenoid, thus avoiding outside interference. Easy to install and convenient to use. The cylinder can be dismountable, and the port has the elastic clip fastener. Helps reduce EMI on AC power lines. Black plastic enclosed ferrite core for 5 mm AC power cords. Great for cutting noise on USB, firewire, phone, power cord, coaxial, audio, video cables, etc. This rectangle ferrite Bead can be widely used in a variety of Data cables, USB cable, telephone line, network line to shield external electromagnetic interference. 60 Pieces Clip-on Ferrite Ring Core RFI EMI Noise Suppressor Cable Clip for 3mm/ 5mm/ 7mm/ 9mm/ 13mm Diameter/Video Cable Power Cord (Black)