1.good material 2.durable ,good function. 3.high quality by precision machining 4.flexible production and competitve pric 1.the material is DC04 ,which has good machining characters ,good corrosion,and very light2.precision turning could get the accurate dimensions.4.flexible production lot and competitve price.5.reasonable packing:carton box6.the net weight is 0.05KGS/PC7.deburrs,degrease8.human ...