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><br> Compatible with all standard cartridge grips & machines.<br><br> Made of 316L surgical stainless steel and medical-grade plastic.<br><br> E.O. Pre-sterilized and packaged in sterile blister packs.<br><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