... delivery 3)Professional maker 4)good workmanship Black oxidize metal hanger Material: Aluminum,Brass,Copper,Bronze,Steel,Stainless steelProcess: Sand ... die casting and CNC machining castingPrecision machining: CNC turning, milling, drilling, grinding, cutting, reaming and threadingFinished: Polishing, sand blasting, heat ... Environment Protection OEM & ODM are welcome ! Black oxidize metal hanger