... ,N33AH,N35AH(Max.operational temperature:up to 230c) Neodymium metal Outsanding product:1)high performance:N52,N48M,48SH,42UH,38EH ... average low weight loss less than 2 mg/cm2 Neodymium metal applications:loudspeakers,motor assemblies,windmill,Home appliance,acousics,communication ... plain iron, very difficult to pull away (easy to slide however). Pretty strong hold between two of these even with ...