ITEM NAME:36mm x 23mm x 15mm Round Green Iron Inductor Coils Toroid Ferrite Core 3C Specification: Material: Others Color: Green Outside Dia.: 36mm Inner Dia.: 23mm Thickness: 15mm [Conversion: 1cm=0.3937 inch, 1inch=2.54 cm] Features: Brand new and high quality Used widely in power transformers, current transducers, instrument transformers, inductors, chokes, ballasts, voltage stabilizers and regulators, welding transformers, broad band transformers, filters, etc. Notice: 1.Please allow 1- 3m m error due to manual measurement,Please make sure you do not mind before you.1 x Ferrite Core. Outside Dia.: 36mm. Inner Dia.: 23mm. Thickness: 15mm. Color: Green.