ITEM NAME:5 Pcs Amidon Iron Powder Toroidal Core T-130-2 High Quality New Arrival V3 Specifications Color: Red Material: Carbonyl iron powder Size: Outer diameter: 7.8mm Inside diameter: 3.84mm Height: 3.25mm Features - High saturation magnetic flux density, able to work in a large current - Stable and reliable performance, effective permeability with excellent frequency characteristics - Has a high temperature characteristics - The annular structure has a very low electromagnetic radiation shielding materials savings, reducing the shielding requirements of the work Packing Included.Material: Carbonyl iron powder. 5xCarbonyl iron core. - High saturation magnetic flux density, able to work in a large current. - The annular structure has a very low electromagnetic radiation shielding.