EZ cartridge needles are disposable single-use, tattoo needle cartridges that allow tattoo artists to set up needles and switch needle configuration very quickly during tattooing process. <br>Needles specs: 0.30mm Needle Diameter and 3-3.5mm Medium Taper. <br>Compatible with all standard cartridge grips & machines. <br>Made of 316L surgical stainless steel and medical-grade plastic. <br>E.O. Pre-sterilized and packaged in sterile blister packs. <br>No allen keys required, sold in a box of 20 pieces.<br><br>Cartridge needles diamete and taper specification:<br>#10Bugpin Diameter 0.3MM<br>#12Regular Diameter 0.35MM<br>#14 Diameter 0.4MM<br>#8 Bugpin Diameter 0.25MM<br>Super Tight X-Taper 7.00MM<br> Long Taper 5.5MM<br>Medium Taper 3.5MM