ITEM NAME:10 Pcs Inductor Coils Green Toroid Ferrite Cores 10mm x 6mm x 5mm E3F7 10 Pcs Inductor Coils Green Toroid Ferrite Cores 10mm x 6mm x 5mm E3F7 These Toroid Ferrite Cores designed with 6mm inner diameter, 10 outside diameter, 5mm height. Used widely in power transformers, current transducers, instrument transformers, inductors, chokes, ballasts, voltage stabilizers and regulators. Product Name : Ferrite Core Material : Metal Color : Green Overall Size : 10 x 6 x 5cm/ 0.39" x 0.24" x 0.2" (Outside Dia.*Inner Dia.*T) Net Weight : 12g Package Content : 10 x Toroid Ferrite Core Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm..Color : Green. Overall Size : 10 x 6 x 5cm/ 0.39" x 0.24" x 0.2" (Outside Dia. Inner Dia. ).