Professional tattoo needles EO gas sterilization . the material is Japanese 304 ... ,Sterilized,304 stainless steel for liner and sharder,perfect quality.tattoo needle Professional tattoo needles EO gas sterilization . 50 ... 7RS,8RS,9RS,10RS,11RS,12RS,13RS,14RS,15RS Round Liner needle on bar 1RL,2RL,3RL,4RL,5RL,6RL ... E. O. Gas Each Sterile Pouch has printed the needles type on it, so you never have to guess ...