1Cartridges Needles: Each needle is strictly checked with a microscope at 200 magnification, so that each needle change is as you expect and does not affect the microblading effect. 2Cartridges Needles: Needle was made of 316L medical stainless steel and was hypoallergenic. 0.32mm fine needle, effectively reduce skin damage, fast coloring. 3Stable Working: The needle is more stable, and the influence of machine vibration on the needle is reduced, and the service life is effectively increased. 4For Shading: Precise structure, bring smooth and smooth stroke experience. More ink storage, convenient for tattooists to shader large area. 5Ideal Choice: Independent packaging design, safe and hygienic. Ideal for professional tattooists and suitable for most machines.