1 Precision:0.01mm 2 size between 6mm and 80mm 3 carburized gear 4 small, mirco and black Milling precision: 0.02mmGrinding precision: 0.001mmGood workers and strict quality controlMaterials: copper, aluminum, steel, stainless steelFinish: anodizing, electroplating, baking, electrostatic sprayColor: black or silverApplication: parts of device, jigs or any custom requirements.Our company has R&D ...