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1. Nhazi: The mkpọpu ihe ịghasa bụ ụdị osisi ịghasa, na onwe-tapping ịghasa bụ ụdị nke onwe-kpọchide ịghasa.Padded eri akuakuzinwo ọdụ ntu 2, Ịmata ọdịiche dị n'etiti isi ụdị: Drill ọdụ ịghasa isi ụdị gụnyere: hexagon isi, hexagon flange isi, cross countersunk isi, cross pan h ...GỤKWUO