10pcs 9 12 24 36 42 Nano cartridge micro needle Fit for Bayonet M5/M7/MYM/N2/E30/A10 Derma Pen Dr.Pen 1 Pin / 3 Pin Needle: Depth Acne Poxhole,Weak Derma Spot 5 Pin / 7 Pin Needle: Removing Spots, Tendering Skin, Shrinking Pores, Lift, VC Water, Tight Hydration etc. (Note: 1 Pin / 3 Pin / 5 Pin / 7 Pin needles are used by point operation with pain) 9,12 Pin Needle: Repairing Acne Pits, Removing Blain, Weak Derma Spot etc. 24 Pin Needle: Repair Deep Lines, Lift, VC Water, Tight Hydration 36 Pin Needle: Removing Spots, Tendering Skin, Shrinking Pores, Repair Deep Lines, Lift, VC Water, Tight Hydration etc. 42 Pin Needle: Removing Spots, Tendering Skin, Shrinking Pores, etc. (Note: 9 Pin / 12 Pin / 24 Pin / 36 Pin / 42 Pin Needles are used by point operation with pain) 3D nano functions :eye cilia; pregnancy mirage; repairing red blood; eye bags; dark circles and other eye problems; light acne marks, light acne pits, acne, blemishes, introduction of liquid essence, water, various MTS care for normal skin. 5D nano functions:eye cilia,pregnacy mirage,deep acne marks, deep acne pits, facial masks, stretch marks and other skin care of items. Round nano functions:leading water, freeze-dried powder, MTS pro-lip surgery, daily care of skin.