Size of Central Venous Catheter 1. Single Lumen 14Ga/16Ga/18Ga/20Ga/22Ga, with length 13---30cm 2. Double Lumen 5Fr/7Fr, with lenght 13--30cm 3. Triple Lumen 5.5Fr/7Fr, with lenght 13--30cm Components: Catheter with clamp; 5ml syringe; Introducer needle; Guidewire with advancer; Dilator; Catheter clamp; 7# needle; Injection cap, Blue GW syringe