Dr.pen M8/M7S Cartridges 16 Pins, 10Pcs Dr.pen Replacement Cartridges for Microneedling Pen M8/M7S Model, Authentic Disposable Microneedling Cartridges (16 Pins, 10Pcs)100% AuthenticThese Dr. pen microneedling cartridges are all manufactured by authorized manufacturers of Dr. pen, designed specifically for use with the Dr. pen M8 M7S, ensuring genuine quality and compatibility. Individually PackagedIncludes 10 Dr. pen cartridges Each micro needling cartridge is individually packaged as a disposable sterile product, ensuring no cross contamination and giving you peace of mind. Model16 Pins, suitable for Dr. pen M8