Isshinsai Fountain Brush Ink Screw Flash Red Brush Fine Calligraphy Sutra for Calligraphy Practice Pen, Refillable, Type, Pen, Brush, Brush, Brush,

1. Can be used with fountain pen ink or India ink. This product does not include ink, so you can use your own ink at home. Ink is not included, so you will need to purchase your own ink. 2. Fine brush: Ear diameter 3.0mm x Ear length 10mm. 3. With the tip facing downwards, push the ink cartridge straight in. When pushing, try to "press until you hear the 'card' sound." Then, try "shaking it gently." Alternatively, you can leave the pen tip facing downwards for about a minute. 4. Precision anti-slip rotatable design: After refilling the ink, turn the knob clockwise until you hear a "card" sound to prevent accidental turning of the knob and ink leakage. 5. This fountain pen is suitable for copying small characters, signing, and copying scriptures. It can write for a long time with a single ink refill, eliminating the need to frequently refill the ink on the writing brush. It's very convenient, and you can even add your own colors. This fountain pen-style calligraphy pen is ideal for small characters, signatures, and copying sutras. It allows for long periods of writing with a single ink refill, eliminating the need to constantly refill the calligraphy brush. It's very convenient. You can also add your own colors. It can be used with fountain pen ink or India ink. This product does not include ink, so you can use your own ink at home. Ink is not included; you'll need to purchase your own ink.