... guarantee 3.Material : brass,steel,AL. 4.Different style Mechanical part machinery metal partBrass Mechanical metal ... production to delivery.2) Used in many industries :electronic ,computer ,automobile ,machinery ,medical instrument and sport ... competitive priceMaterial:Aluminum,Iron,Brass,Carbon steel,Bearing steel,stainless steel,PlasticSurface TreatmentPolishing,Zinc/Nickel/chrome plating ...