100% AuthenticThese microneedling cartridges are all manufactured by authorized manufacturers of Hydra. Pen, designed specifically for use with the Hydra. Pen H3/H5 serum applicator, ensuring genuine quality and compatibility. Individually PackagedIncludes 10 microneedling pen replacement cartridges. Each micro needling cartridge is individually packaged as a disposable sterile product, ensuring no cross-contamination and giving you peace of mind. Friendly Reminder Microneedling replacement needles are for personal use only, for one-time use only, do not share with others or reuse. Do not use on open wounds or irritated skin. Before opening the pen, be sure to remove the white protective cover from the top of the cartridge.