Professional Cartridges, advanced visual optimization tube. Wthylene Oxide (EO) Gas Sterilized Individually Packaged Single Use. Needles Made by 304L, polished by automatic machine that working more smooth. Consist of needles shell, perfect membrane tension, thin profole mold innovation and perfect taper needles. Mixed Size: 1207RM,1209RM,1201RL,1203RL,1205RL