Located in Shanghai, China, with abundant experience, we specialized in manufacturing WIRE COLLATED COIL SCREWS: Finish:coating ; yellow or white galvanized . Length:2" to 3-1/4" (50mm to 83mm); Diameter:6 Ga to 14 Ga(5.0mm to 2mm) . Welcome your specific inquiry, We will offer you COIL SCREW with high quality & competitive prices. Pls contact Mr. Ren.