ITEM NAME:5 x Micro metals Amidon T37-2 Iron Powder Toroidal Core T-37-2 Toroid Chic Specifications Color: Red Material: Carbonyl iron powder Size: Outer diameter: 9.53mm Inside diameter:5.21mm 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. - The annular structure has a very low electromagnetic radiation shielding. - Has a high temperature characteristics. frequency characteristics.