√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 5pcs (color: yellow white) ferrite ring toroid core iron that measure (Outer Diameter*Inner Diameter*Height) 20.5 x 12 x 9.8mm/0.81 x 0.47 x 0.36 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. 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 5pcs (color: yellow white) ferrite ring toroid core iron that measure (Outer Diameter*Inner Diameter*Height) 20.5 x 12 x 9.8mm/0.81 x 0.47 x 0.36 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.