... therapy * Derma Roller Size:0.2mm, 0.25mm, 0.3mm, 0.5mm, 0.75mm, 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm Portable Microneedle Derma RollerI ... , and effectively for skin anti-aging.II. Production Specifications* Roller Body: diameter 20mm X width 14mm* Disc: 8 Microneedle ... purpose (stainless steel)* Body Material: PlasticFor skin regeneration1.0, 1.5mm ( use for solutions of thin epidermis, thin wrinkle, ...