Effective noise reduction: includes 20 ferrite core noise suppression filter ring clips that significantly reduce radio frequency interference, helping improve signal clarity and device performance. Wide compatibility: suitable for USB, FireWire, phone lines, power cords, and audio/video cables, providing versatile use across different devices and setups. Easy installation: dualclamp design allows quick, tool attachment around cables, enabling a clean, hassle upgrade to noise suppression. Five size options: includes five distinct sizes (5mm, 5mm, 7mm, 9mm, 13mm) to fit a range of cables and devices and ensure a secure, effective fit. Material and construction: ferrite core clips designed to clamp onto cables without adding bulk, providing durable, longlasting performance. Performance benefits: reduces RF interference to enhance signal integrity, minimize noise, and improve overall reliability of connected peripherals. Use scenarios: On USB or USBC cables near computers, external drives, or hubs to improve data stability and reduce transmission errors. On audio/video cables in a home theater or studio setup to achieve cleaner sound and clearer video signals. On power cords for sensitive electronics in environments with electrical noise (near routers, printers, or crowded workspaces) to reduce hum and interference. What you get: a 20piece ferrite core noise suppression clip set with five size options, designed to fit a wide range of cables and applications for everyday reliability.