Irin alagbara, irin gritjẹ irin alagbara, irin angula patiku.Ti a lo pupọ julọ fun mimọ dada, yiyọ kikun ati descaling ti awọn irin ti kii-ferrous ati awọn ọja irin alagbara, ti n ṣe aibikita dada aṣọ, nitorinaa paapaa dara fun iṣaju oju ilẹ ṣaaju ibora.