Dr. Pen 12 Pins Derma Ultima A1 Replaceable Cartridges Needle 8cm, 25 Pieces

1 Dr.Pen's sterile and individually sealed replacement nibs are designed for single use only. 2 Compatible with Dr.Pen Ultima A1. 3 The semi-transparent pen tip makes it easy to observe acupuncture strokes. 4 A box of 25 tablets. 5 Easy to install Take out the ink cartridge from the sterilization package, insert the standard round slot into the slot of the machine, push the ink cartridge to the end horizontally, turn the box counterclockwise to lock the box.