Dr. Pen a20 microneedling cartridge h14 10 pieces box for professional use only disposable needle cartridgebefore use: make sure the package no damage during shipping before use. Read the instruction for use before proceeding with application. Dr.Pen a20 microneedling systerm is fda 510k approved class ii medical device. 510K number: k230420 fei number*: 3013360665as a cornerstone technology for modern aesthetic practices, the dr. Pen a20 represents the next evolution in professional skin restoration. The dr. Pen a20 is a state-of-the-art microneedling device that combines cutting-edge technology with an intuitive design, setting a new standard in skin rejuvenation. This class ii medical device works by creating controlled micro-injuries in the skin's surface, encouraging natural collagen production and enhancing skin texture and elasticity. Key features advanced precision equipped with 14 high-quality 34ga stainless steel needles radial needle arrangement ensures uniform treatment across the skin 2mm needle spacing for thorough coverage high-speed motor system that delivers 105-128 punctures per second speed range of 6300-7700 rpm for precise treatment customizable treatment options 9 adjustable depth settings needle penetration ranges from 0mm to 2.0Mm fine 0.25Mm increments for meticulous control the ideal treatment depth is typically 1.5Mm for best results microprocessor-controlled for consistent performance and safety hygiene and safety fda-cleared k230420 for medica...