... , 18G, 20G, 22G, 24G 4.Sterile IV catheter Different types: pen type, injection type, wing/butterfly type, Y type. Color ... coded for size identificationDifferent types: pen/straight type, injection type, wing/butterfly type, Y type.1. Thin-wall ... surfaces5. Back-cut special designed needle6. Flexible fixation wings7. Injection valve with cap8. Hydrophobic blood stopper9. Lock fiffing10.Sterilized ...