The Fair-Rite 5977004901 is a solid round ferrite core designed for cable applications. This core, made from Fair-Rite's 77 material, provides excellent impedance characteristics for suppressing electromagnetic interference (EMI) and radio frequency interference (RFI). Its round shape allows for easy snap-on installation onto cables, making it a versatile solution for various electronic devices. Supreme Components International is an authorised distributor of Fair-Rite components, ensuring you receive a genuine, high-quality product. This ferrite core is ideal for use in power cables, data cables, and signal cables to improve signal integrity and reduce noise. Choose the 5977004901 for reliable EMI suppression.