The Round Cable Snap On Ferrite Core by FAIR-RITE PRODUCTS is designed to improve EMC performance and reduce EMI noise in cables operating within a frequency range of 200-1000MHz. With a maximum cable width of .709 this ferrite core can easily snap onto cables to provide effective noise suppression. Made from 61 Material this ferrite core offers excellent attenuation properties to ensure optimal signal integrity. It is an ideal solution for various applications requiring noise suppression in high-frequency cables."