MULTIPURPOSE - Our ferrite ring is good for power transformers, current transducers, instrument transformers, inductors, chokes, ballasts, voltage stabilizers and regulators, welding transformers, broadband transformers, filters, etc.

WHAT YOU GET - The package comes with 200pcs (color: yellow white) ferrite ring toroid core iron that measure (Outer Diameter*Inner Diameter*Height) 13 x 7.4 x 5mm/0.51 x 0.29 x 0.2 inches.

RELIABLE MATERIAL - This ferrite ring is made of ferroferric oxide. This is a ferrite ring, not a magnet. It has no magnetism.

SPECIAL DESIGNED - Iron powder core is generally stored near signals of place. It has the characteristics of isolating eddy currents, low permeability, and restraining interference.

KINDLY NOTE - As a fragile item, you need to be careful when using it to avoid breakage.