Available in 4 sizes (3.5 / 5 / 7 / 913Mm), these ferrite beads cater to a wide ranges of cable diameters for versatile use Widely suitable for electromagnetic interferences suppression in various electronic devices, such as data cables, USB cables, telephone lines, and net cables, to protect against external electromagnetic interferences Easy Installation: Features a cylindrical on design for simple installation Just opens it, clip onto the cable, and it ' s ready to use Designed to reduce RFI, ensuring a cleaner signals for your USB, and cables Make of ABS, which enhances the electromagnetic field around the coil and effectively resists external interferences, Manufacturer: Tsophreniq