Using Semi Disposable Tattoo Cartridge Needle BL-00059 has many benefits outside of just tattooing with them. Using True Cartridge Needles and True Cartridge Tubes eliminates the additional risks of scrubbing dirty needles, which has many cross contamination points and is a risky process in general, exposing artists to unwanted additional sanitary risks. disposable tattoo needles also eliminate the need for expensive autoclaves, ultrasonic machines, harmful chemicals used to sterilize, tube bags, spore tests, and saves the tattoo artist many hours of sterilization time, allowing the tattoo artist to have more time to focus on tattooing with a brand new needle every time. True Cartridge Needles disposable tattoo needles are work ready, sterilized and ready to use. True Cartridge Needles is the best possible way to ensure a brand new, sterile tattoo needle that performs like new every time!