Comprehensive Set: This package includes 60 ferrite chokes with varying diameters (12 each of 3.5mm, 5mm, 7mm, 9mm, and 13mm), ensuring compatibility with a wide range of cable sizes for versatile use in different applications. Effective Interference Isolation: Designed to significantly diminish electromagnetic interference () and radio frequency interference (RFI), these ferrite beads enhance the performance of USBs, coaxial cables, power cords, and audio-video cables by reducing noise and ensuring clearer signal transmission. User-Friendly Design: Each ferrite core features an innovative elastic buckle design, allowing for quick and secure installation without the need for tools. The disassembly is just as straightforward, facilitating easy removal and reuse as needed. Versatile Application: Ideal for a variety of cables including USB data cables, coaxial cables, telephone cables, network cables, and audio-video cables, these ferrite cores as an essential tool for shielding cables from external electromagnetic interference, ensuring stable data transmission. Construction: Encased in a robust plastic shell, these ferrite chokes are built with a high-quality ferrite core that offers excellent and maintains efficiency over time, making them a reliable choice for managing cable interference. Color: Black Material: plastic Package Contents: 60*magnetic ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.