... available: 192 needles or 540 needles. Sizes: 0.2mm, 0.25mm, 0.3mm, 0.5mm, 0.75mm ,1.0mm, 1.5mm, 2.0mm, ... remove stretch marks.So what does a DermaRoller look like?A Derma Roller is a simple hand held skin roller ... only 1 millimetre long (we also stock a 0.2mm, 0.25mm, 0.3mm, 0.5mm, 0.75mm ,1.0mm, 1.5mm, 2.0mm ... , 2.5mm, 3.0mm device) so all you feel is a ...