This is a 140A Needles Rodillo Stamp, a micro-needling tool designed for hair loss regrowth and scalp tattoo (such as scalp micro - pigmentation). It features adjustable titanium needle length, allowing users to customize the needle depth according to their needs. The rodillo (roller - type) stamp design ensures uniform and efficient application, making it a practical choice for promoting hair follicle stimulation and achieving scalp tattoo effects. The use of titanium needles offers durability and safety, suitable for professional or at - home use in related hair and scalp treatments.