... ,C1271,C2100,C2200,C2300,C2400,C2600,C2680,C2700,C2720,C2800,C2801 Copper tube / Brass tube Materials:C1100,C1020,C1201,C1220,C1271,C2100,C2200,C2300,C2400 ... ,C2600,C2680,C2700,C2720,C2800,C2801 etc.(special materials by your requirements) Outside Diameter Φ1.8MM ...