Countersunk
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Igwe Ọdụdọ Countersunk
Aha ngwaahịa: Neodymium Magnet nwere oghere Countersunk/Countersink
Ihe: Igwe Ọdụdọ Igwe Ọdụdọ/NdFeB/ Neodymium Iron Boron
Akụkụ: Ọkọlọtọ ma ọ bụ ahaziri
Ihe mkpuchi: Silver, Gold, Zinc, Nickel, Ni-Cu-Ni.Ọla kọpa wdg.
Ụdị: ahaziri
