http: / / 6888888.diytrade.com/ Central Venous Catheter 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