The FAIR-RITE PRODUCTS part 0444173551 is a round cable snap-on ferrite core designed to provide effective noise suppression for cables in the frequency range of 25-300MHz. Made from high-quality 44 material, this ferrite core is ideal for applications that require reliable and efficient cable EMI/RFI suppression. With a maximum cable width of 0.728 it can easily be snapped onto cables of various sizes to provide a secure and stable fit. Whether you're dealing with audio video or data cables the FAIR-RITE PRODUCTS part 0444173551 is an excellent choice to ensure optimal signal integrity and reduce electromagnetic interference."