needle cartridge for dr. pen mym yyr derma pen needle 12pin bayonet coupling connection

1 pin: tattoo, eyeliner and eyebrow.
3 pin,5 pin, 7 pin : tattoo and eyebrow.
9 pin: repair mole pit; remove acne; eliminate stretch marks, wrinkles 12 pin: repair acne pox pit; remove acne; eliminate stretch marks, wrinkles
36 needle: whitening; watering; spot removing; skin rejuvenation; shrink pores. nano needle: painless nutrition importing, whitening skin; spot removing; skin rejuvenation. nano silicone: painless operation, import nutrients, pit repair, lightening skin color, restore skin activity..syi