precision stainless steel twin-flight threaded rod 1.material:stainless steel 2.finish:polish 3.good quality and best service Products introduction:1.With well deburr,perfect surface,high quality.2.Competitive price with high quality.3.Materials: stainless steel4.Process-treatment:cutting,perforating,polish5.Manufucturing machine: CNC lathes,machining centers,drilling machines ,injection moulding ...