The FAIR-RITE PRODUCTS part 5961003801 is a high-quality ferrite core toroid core. Made from the reliable and efficient 61-Material, this toroid core offers excellent magnetic properties. It has an inductance rating of 170nH with a tolerance of 25%, making it ideal for various electronic applications. Whether you are designing a transformer, choke, or any other magnetic component, this ferrite core toroid core is a perfect choice for ensuring optimal performance and durability.