MyM® Electric AUTO Micro Needle Derma Stamp Pen Skin Therapy By Nucell Skin Solution For ★★ br br br MyM® Electric AUTO Micro Needle Derma Stamp Pen Skin Therapy By Nucell Skin Solution For ★★ br Derma Stamp Pen Kit 1 Electric Microneedling Pen 9 Level Speed Control 10 Packs of Needle Cartridge br Needle Material 100 Surgical stainless steel needles br Needle Catridge Each Catridge is disposable and has 12 needles br Adjustable Needle Needle size can be adjusted from 025mm to 20 mm br Adjustable Speed 9 levels of speed to treat different skin condition