Ferrite Ring Magnet D68xd32x8mm for Loudspeaker

Dimensions: OD 68mm x ID 32mm x Thickness 8mm Tolerance: ±0.1 x ±0.1 x ±0.1 Material: Ferrite Performance: Y30BH Paint/plating: / Magnetization direction: Thickness, 8mm direction Maximum working temperature: 300ºC Br: 4,000 Gauss BH(max): 4 MGOe