Grade : N50. Dia:0.19" - 0.39"(5mm - 10mm). 0.19" - 0.39"(5mm - 10mm. Width:10mm. Models piling, you can use small magnets to connect two widgets. Hape : Block. Electrical field: VCM, CD / DVD-ROM, generators, motors, servo motors, micro-motors,motors, vibration motors. ).
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