... .operational temperature:up to 230c)ndfeb rare earth magnet rod Outsanding product:1)high performance:N52,N48M,48SH,42UH, ... loss less than 2 mg/cm2ndfeb rare earth magnet rod applications:loudspeakers,motor assemblies,windmill,Home appliance,acousics,communication ... step motor,DC motor and linear motor,mircrophonesPros: Very strong hold when contacting another magnet or plain iron, very difficult ...