Imashini ya bar, cube magnet, impeta ya magneti hamwe na magnesi zo guhagarika nizo shusho zikunze kugaragara mugushiraho burimunsi hamwe nibisabwa bihamye. Bafite ubuso bunoze neza kuruhande (90 °). Iyi magnesi ni kare, cube cyangwa urukiramende mu buryo kandi ikoreshwa cyane mugufata no gushiraho porogaramu, kandi irashobora guhuzwa nibindi byuma (nk'imiyoboro) kugirango byongere imbaraga zo gufata.
Icyiciro: N42SH cyangwa yihariye
Igipimo: Yashizweho
Igifuniko: NiCuNi cyangwa yihariye