We offer discount for large quantity. We invite you to us!2 pcs. 33Mm X 19Mm X 11Mm Yellow White Core Iron Ferrite Rings ToroidProduct Name: ferrite ring; Each size: 33x19x11mm/ 1.3" x 0.7" x 0.4" (outer diameter * inner diameter * T)Material: IronColor: yellow, whiteNet weight: 83gToroidal shaped. Used for high temperature coils. Powdered iron is usually stored near site signals. It has eddy current isolation, low permeability, and constant magnetic characteristics. Package Contents: 2 x Ferrite RingNote: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm. About UsWe provide good product with best price, we support wholesale order/