The Roller Smart GR Derma Micro -gap 0.50mm w/ 540 needles is a new and high quality GR medical brand product. With a roller of microacles and 540 0.5 mm titanium needles, this product is perfect for taking care of your skin. With a total length of 0.5 mm and total width of 0.25 mm, the Roller Smart Derma is ideal for stimulating collagen production, improving skin texture and reducing the appearance of wrinkles and scars. Try it now and enjoy healthier and more radiant skin.