Gravity Casting, Filler Neck Parts with Precision Die Molds and Tooling, Made of Aluminum Alloy Model Number:DR-D053 ... 2008 flow analysis Further machining work: turning and cutting, milling, grinding, drilling and reaming and threading Surface finish process: polishing shot blasting ... 0.010 to 100kg Gravity Casting,Filler Neck Parts with Precision Die Molds and Tooling, Made of Aluminum Alloy