The FAIR-RITE PRODUCTS part 0475176451 is a Round Cable Snap On Ferrite Core that is designed to effectively suppress EMI/RFI interference in electronic equipment. With a high-performance 75 Material, this ferrite core provides excellent attenuation of electromagnetic frequencies ranging from 200 kHz to 30 MHz. It is specifically designed to snap onto round cables with a maximum width of .343 ensuring easy installation and reliable performance. Perfect for a variety of applications this ferrite core is an essential component for maintaining optimal signal integrity and reducing noise in electronic circuits."