Description: Product material: Ni Zn ferrite. It can improve the electromagnetic field around the electromagnet, thus avoiding external interference, ferrite core with cover; Helps reduce AC power lines. Easy to install: convenient to use. The cylinder is removable and the port has a flexible clip clasp. Widely used: This noise suppressor can be widely used on various data cables, e.g. USB cables, telephone lines, power supply, cables, network cables from external electromagnetic interference. Applicable situations: can be used to hold various such as: power cable, audio cable, AV cable, data cable etc. Effectively shields electromagnetic interference and filters out noise pulses. Package includes: 10 cable clamps, with inner diameter of 5mm Specification: Material: Ni Zn ferrite Inner diameter : 5mm/0.2in Package include: Ferrite cable clamps Note: 1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the image may not reflect the actual color of the item.3. We wish you a wonderful online shopping experience!