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【Three-Specification Combination Set,Comprehensively Compatible with Multiple Cable Types】The set comprises 25 pcs ferrite ring cores, including 10 units with an inner diameter of 3.5mm, 10 units with an inner diameter of 5mm, and 5 units with an inner diameter of 7mm. This multi-size combination design perfectly accommodates various cables in your home or studio—from slender data cables to thicker power cords—providing a one-stop solution for electromagnetic interference across all devices. 【Premium Materials and Wear-Resistant Coating,Balancing Durability and Aesthetics】The ferrite core crafted from high-performance ferrite soft magnetic material, the rings deliver stable, long-lasting performance. Their exterior features a durable black matte coating that effectively resists daily scratches while maintaining a sleek, professional appearance, seamlessly integrating with any electronic device. 【Broad Compatibility Across Multiple Devices Ensures Stable System Operation】Widely applicable to USB cables, chargers, audio/video cables, network cables, automotive electronics, and computer peripherals. An essential accessory for enhancing the interference resistance of home cinema systems, office computers, automotive electronics, and communication devices, ensuring your electronic systems operate reliably in complex electromagnetic environments. 【Special Snap-fit Design for Effortless,Secure and Reusable Installation】Ferrite beads clip with double snap design, the ferrite ring locks firmly onto cables with a simple press – no tools required. Its smooth opening and closing mechanism allows flexible adjustment between cables or repeated use, delivering a highly adaptable noise suppression solution. 【Effectively Suppresses Electromagnetic and Radio Frequency Interference to Enhance Signal Quality】Constructed from high-performance soft ferrite magnetic material, it efficiently absorbs and mitigates electromagnetic and radio frequency interference. Ferrite ring core reduces device noise, screen snow, or signal distortion, delivering purer audio output, more stable video display, and faster data transmission experiences.