The set includes: 1 x Cartridges 11, 24, 36 ,42, Nano, 5D Nano, Round Nano, Silicone Nano 2 x Cartridges 16 Designed shutdown for Dr Pen A6s. Ability to adjust needles in the range: from 0,25 to 2,5 mm High quality goods! Incredibly low price! Adjustable needle length in the range: 0,25 2,5mm Cartridges 11, 16, 24 are used to remove scars, acne and nourish the skin Cartridges 36, 42 are used to remove wrinkles, spots (discoloration) and nourish the skin Nano, 5D Nano, Round Nano and Silicone Nano cartridges are used to remove redness, nourish the skin and inject active substances into the skin and for BB GLOW treatments This kit includes all cartridges, so you can use them in a way!!! IMPORTANT: Use each cartridge only once. Always discard cartridges after use; they are NOT reusable. Repeated use of the cartridge can cause skin irritation and other unwanted side effects. PROCEDURE: 1. 2. Anesthetize the treatment area if necessary. 3. Open the cartridge a moment before the procedure. 4. Disinfect the treated area. 5. Wet the skin with a tonic or immediately apply an ampoule for microneedle mesotherapy. 6. Repeat 4-5 times (each area separately).