[Features] ● Adopts a newly developed knitting thread "Gouito" with nylon single thread in the core. Achieved 36 times the durability (compared to our conventional products). ●We adopt slanting cut which is easy to hold down, and the tip is easy to see. ●The main body can be fully opened without any tools, making it easy to clean and change threads ●Rubber packing is used at key points to prevent ink from leaking and to prevent ink from drying out, allowing for long-term use. Uses cellulose sponge cotton that dramatically improves ink inclusion. ● Comes with a cotton presser that allows ink to soak evenly into the thread.