The Nubway facial gold micro-needle wrinkle removal machine is outfitted with 3 different kinds of needles for treatment, including 81 needles, 49 needles and 25 needles, which can meet your treatment requirements for different body parts. The needle can reach a depth of 0.3mm to 3mm. It can be directly adjusted on the handle and removes the need for needle replacement. The point of the needle has undergone gold plating and insulation process. It can emit energy into the layer of collagen.