Welcome to our shop !Your satisfaction is our goal !We promise you to buy 100% of the goods are genuine original.The goods you purchased will be shipped within 2 working days.Warm prompt:1. The goods you buy are sent by mail, it will take 10-45 working days to arrive. We can also DHL or AliExpress Premium Shipping by way of mail, it need 7-15 working days.Delivery time may be delayed due to some factors of the destination. If after 30 working days not received, please contact us!2.The import duty on the goods shall be borne by the buyer.3.Please make sure that the address you provided to us is accurate.4.About payment we only accept third party hosting services.5.If you are not satisfied with your order, you can return / exchange a full refund within 14 days (except shipping) as long as the product is in the original shape. Please contact us before you ship, we will tell you the address.When we received the parcel, We can refund your money.Contact us:1.Customer satisfaction is very important to us, our feedback rating reflects this satisfaction.2.If you have any questions, please contact our customer service personnel by email. we try to answer all the questions and solve any problems as soon as possible. If you have any questions, please contact us before bidding. Thanks!Good luck and have a good shopping experience! Keep in touch and we hope to see you again soon!Material: Y30 Disc Ferrite MagnetSize: Diameter 25mm Thickness 5mm +-(0-0.5mm)Ferrites are sintered from iron oxides and other ingredients. Produced by powder metallurgy. The ferrite magnet has a low remanence and a small magnetic permeability. It has large coercive force and strong anti-demagnetization ability, and is especially suitable for magnetic circuit structure used as dynamic working conditions. The material is hard and brittle. Can be used in diamond cutting tools for cutting. The main raw material is oxide, so it is not easy to corrode. Operating temperature: -40 ° C to +200 ° C.The magnetic force is usually 800-1000 Gauss,which is often used speakers and other instruments.