20Pcs Toroid Ferrite Core, 31X19X29Mm Toroidal Transformer Ring Magnet

What is this?Ferrite cores are used to achieve pure signal integrity and reduce data loss in environments with high-frequency noise problems. Applications include audio, video, speaker cables, USB, Ethernet, computer peripheral cables, radios, RF transmitters, and DIY electronics.What will I get?Type: Toroid Ferrite CoreMaterial: ToroidOverall Size: 1.22 x 0.75 x 1.14 inches/31 x 19 x 29mm (OD x ID x H)Package Includes: 20 pcs Toroidal Transformer CoreAre there any advantages of the product?These toroidal cores are made of premium, high-permeability ferrite materials, exhibiting excellent chemical stability, thermal stability, insulation, and corrosion resistance. They also provide excellent EMI/RFI absorption.How to use it?Simply insert the toroidal transformer ring into the cable or pass the wire through the center hole to use it. It is designed to attenuate common-mode noise in the radio frequency (RF), electromagnetic interference (EMI), and high frequency (HF) ranges, reducing noise and improving signal clarity.What should I notice?For best results, the toroid cable or wire should be passed through the toroidal core multiple times to increase inductance and damping effect.