Product character: * Latex-free * Sterile and non-pyrogenic * Can observe vein blood flow clearly * Sterile: EO * Can be used for multiple taking blood samples with single puncture * Smart patent design offers more convenient operation and high success rate puncture * Thin wall needle makes the blood collection more quickly and reduce the incidence rate of hemolysis * The vein blood flow is visible after puncture. It solves the difficulty of blood collection * The ideal choice for syringe transforming to vacuum blood.