Mould spring 1.Tight tolerance. 2.OEM&ODM service. 3.Professional production ... , tapping, riveting,cutting,punching,drilling,turning,milling,grinding,rolling,cold drawing, spinning, forging, etcMaterialAluminum, copper, brass, stainless steel, steel, iron, alloy ... +/- 0.01mm,can also customizedSizeDifferent size, according to customer's drawing.MOQTrial order without MOQ,bulk order will be 100PCS,also ...