1PRECISE STRUCTURE: Reduce the impact of machine vibration on the needle, bringing a smooth and stable needle output experience, convenient for artists to operate. 2DISPOSABLE AND HYGIENIC: Each needle is cleaned and packaged independently, which is safe and hygienic, meets the standards. Disposable design, can be thrown away after use. 3CARTRIDGE NEEDLE SET: 20pcs of cartridge needles are available, 5pcs each for model 1203RL, 1205RL, 1205RM and 1207RM, enough to meet your use and replacement needs. 4STAINLESS STEEL MATERIAL: Needle wire is made of stainless steel material, high hardness, match well with the high frequency movement of the machine to achieve rapid coloring. 5MULTIPLE APPLICABLE PLACE: Suitable for professional machine and pen, lightweight and small, easy to store and carry, perfect for home and professional salon.