Generise Black & Gold Titanium Derma Roller 0.5mm Looking to get back that smooth and youthful glow! Derma rolling is an excellent method of stimulating the bodies natural skin defence and skin repair system. Complete with storage case and box. Best results when used alongside our Skinapeel Collagen Serum. Features: 540 Needles. Stainless Steel & Titanium. Anti Slip Grip. Ultra Fine Tips. Boxed. Storage Case.