The HAIRLICIOUSLY Adjustable Derma Stamp comes equipped with 140 medical grade stainless steel needles with an adjustable dial that can increase the needle depth from 0 to 3.0mm. The benefit of the derma stamp is it's vertical stamping motion, which eliminates superficial tearing that can hinder neogenesis. This is a great alternative to the motorized microneedling device. Comes in 1/3/6/12 bundle packages.