Feature: 1. Integrated Structure: Flat blade needle design, precise structure, reduce the impact of machine vibration on the needle, bringing a smooth and stable needle output experience. 2. Large Area Shader: Larger ink storage capacity and large operation area, convenient for artists to perform large area shader operations and improve work efficiency. 3. Disposable 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. 4. Cartridge Needle Set: Standard cartridge needle, suitable for 95% of machines on the market. 10pcs of flat blade cartridge needle, enough to meet your replacement needs. 5. Stainless Steel Material: Needle wire is made of 316L stainless steel, non irritating. 0.35mm ultra fine needle wire reduces skin damage, with great resilience, match well with the high frequency movement of the machine to achieve rapid coloring. Specification: Item Type: Cartridge Needle Material: Stainless Steel, PP Quantity: 10pcs / box Needle Wire: Approx. 0.35mm / 0.01in Needle Stroke: Approx. 3.5mm / 0.1in Use: 95% of pen on the market. Characteristics: Fast coloring, large ink storage, fast needle output, 316L stainless steel. Package List: 10 x Cartridge Needle Note: Please allow slight error due to manual measurement. Thanks for your understanding.