Eto jia alajerun yii ni a lo ni idinku jia alajerun, ohun elo jia alajerun jẹ Tin Bonze ati ọpa jẹ irin alloy 8620.Nigbagbogbo jia alajerun ko le ṣe lilọ, deede ISO8 dara ati ọpa alajerun ni lati wa ni ilẹ sinu iṣedede giga bi ISO6-7. Idanwo meshing jẹ pataki fun jia alajerun ṣeto ṣaaju gbogbo gbigbe.