The FAIR-RITE PRODUCTS part 0475164281 is a Round Cable Snap On Ferrite Core designed to provide effective EMI suppression for cables. Made from high-quality 75 Material, this ferrite core offers superior performance across a frequency range of 200 kHz to 30MHz. With a maximum cable width of .250 it can be easily snapped onto cables for hassle-free installation. Whether you need to reduce electromagnetic interference in communication systems data cables or other electronic devices this ferrite core is an ideal choice. Enhance the performance of your cables and ensure reliable signal transmission with the FAIR-RITE PRODUCTS part 0475164281."