we have all kinds of size ferrite cores, can be designed by the customers.We will reply your email within 24hours and offer the price within the shortest time. Samples are always available. Suppose you sent any your samples or pictures to us, we will do make it as per your sample quality. Welcome your magnet and magnetic assemblies inquiris, welcome your visiting to our factory. 1.Raw material is readily available & low in cost 2.Various shapes and sizes or according to customer&＃039;s request 3.High quality and competitive prices as well as best delivery date.