2 piezas-100 piezas 20 mm x 3 mm orificio 12 mm imanes de anillo redondo tierras raras neodimio N50
Grade : N50. when you choose 2pcs, you will get 2pcs. Inner Dia：12mm. Models piling, you can use small magnets to connect two widgets. Electrical field: VCM, CD / DVD-ROM, generators, motors, servo motors, micro-motors,motors, vibration motors.