... :25mm, ID: 13mm,H:9mm 2.Used for inductors High permeability toroidal core for inductors and transformers:Specifications:1.Shape:Toroidal shape2 ... .74.Lead free RoHS compliant5.Advantages: a. diversified product, b. High quality, c. Best price, d. Small order accepted6.OD: 25mm, ID ...