Ferrite Ring Magnet Speaker D70xd32x15mm

Dimensions: OD 70mm x ID 32mm x thickness 15mm Tolerance: ±0.1 x ±0.1 x ±0.1 Material: Ferrite, Y30BH Paint/plating: / Magnetization direction: Thickness,15mm direction Maximum working temperature: 300ºC Br: 4,000 Gauss BH(max): 4 MGOe