Ebe a na-ebi ndụ lathe bụ ngwá ọrụ dị oke mkpa nke na-eji akwado ihe eji arụ ọrụ mgbe a na-agbanye ya na lathe.Nke ziri ezi: 0.01mmIhe onwunwe: 40CrNha: MT2/3/4/5