This noise suppression set includes 20 ferrite core noise suppression filter ring clips designed to reduce radio frequency interference and enhance the performance of your electronic devices. Benefits and features Reduces RF interference to improve signal quality and device performance. Compatible with USB, FireWire, phone lines, power lines, and audio/video cables for broad applicability. Easy clipon installation with a dual clip design for quick, tool attachment around cables. Five sizes available: 5mm, 5mm, 7mm, 9mm, 13mm to fit a range of cables and devices. Practical applications Desktop computer setups: clip around USB cables and peripheral lines to minimize glitches and improve data integrity. Home theater or multimedia systems: attach to power and audio/video cables to reduce noise and enhance audio/video clarity. Small offices or workspaces: apply to phone lines and data cables to decrease interference and improve reliability.