... contemporary. Specification:Grade: N35-N52(M,H,SH,UH,EH)Shape: Arc with holeCoating: Zinc, Nickel, Silver, Gold-plating, Phosphor, rubber ... Spray Epoxy Resin.Magnetization direction: through which side1.super strong magnet, High performance.2. price more economiacal than SmCo3. High intrinsic ...