1、Cartridges 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. 2、Cartridges Needles: Needle was made of 316L medical stainless steel and was hypoallergenic. 0.32mm fine needle, effectively reduce skin damage, fast coloring. 3、Stable Working: The needle is more stable, and the influence of machine vibration on the needle is reduced, and the service life is effectively increased. 4、For Shading: Precise structure, bring smooth and smooth stroke experience. More ink storage, convenient for tattooists to shader large area. 5、Ideal Choice: Independent packaging design, safe and hygienic. Ideal for professional tattooists and suitable for most machines. 10 x Cartridges Needles Item Type: Cartridges NeedlesMaterial: Stainless steel, ABSProduct Quantity: 10pcs/boxNeedle wire: 0.35mmStroke Length: Approx. 3.5mm / 0.14inUse: Microblading special, 95% of the microblading pen on the market.Characteristics: Fast coloring, large ink storage, fast needle, 316L medical stainless steel