Package contents 20 pieces of cable clamps with 7 mm inner diameter (0.27 in). Suitable for daily use and replacements. Applications The ferrite chokes can be clamped on AC power cords, USB cables, mouse cables, keyboard cables, headphone cables, video cables, audio cables, and data cables. Special Design Clipon ferrite core with small clips that open easily to clamp onto the cable. Material Plastic shell with ferrite core, builtin adaptive clip to ensure a tight installation on the cable and a long service life. Key benefits Reduces frequency noise and electromagnetic interference on connected cables, helping maintain signal quality. Easy to install: clipon design requires no disassembly and clamps securely around the cable. Durable construction: robust plastic shell and ferrite core, with an adaptive clip for a reliable fit over time. Specifications and fit Inner diameter: 7 mm (0.27 in) Material: plastic shell and ferrite core Builtin adaptive clip for secure, longlasting installation Use scenarios Home office or gaming setup: clamp on USB/mouse/keyboard cables to minimize interference and improve reliability. Multimedia or living room setup: clamp on video and audio cables to reduce noise and preserve signal clarity. Small office or datacenter environment: clamp on multiple data and power cables to suppress EMI and stabilize connections.