... , Y25, Y30, Y30BH..Y35. 3. Application in motors,pumps,speakers Ferrite block Magnets:1. Magnet: Barium Ferrite2. Characteristics:Disc, blocks, arcs ... , Y25, Y30...Y35 different grade upon request.3. Application for ferrite magetvarious of electric motors, AC/DC motors, servo motors, step ... and perfect after-sales service.We sincerely welcome your inquiry. Ferrite block magnet with sunkhole