(Please check the correct ink cartridge pin link address.Other brands or models of ink cartridge needle is not compatible.)Healthy Skin Care This one smart investment will save you a fortune in expensive, time-consuming salon facials. 12Pcs Replacement Cartridges 12pcs individually packaged cartridges, 6pcs of which are 12-pin , 6pcs are 36-pin , These cartridges are disposable and one-time use. It is very convenient to replace each time. 7 Speed Levels Equipped with 7 different speed levels to adapt to choose from. You can easily adjust it by short pressing the power button.Do not stay in the same place for 3-5 seconds during use. One-click Easy Operation - The one-click operation is so easy that even beginners can master it quickly. Short press the button for 1 seconds to turn on the beauty tool and gently click the button again to change the mode between 7 gears. Important - Use each cartridge only ONCE. Always dispose of cartridges after use; they are NOT reusable. Repeated use of a cartridge may result in skin irritation and other adverse side effects. Product Round nano 12 Pin 24 Pin 36 Pin 42 Pin Cartridges Other brands or models are not compatible with this cartridge needle. Other brands or models are not compatible with this cartridge needle. Other brands or models are not compatible with this cartridge needle. Other brands or models are not compatible with this cartridge needle. Other brands or models are not compatible with this cartridge needle.