1. Material: plastic, metal 2. Features: damping and anti-skid, compression and wear resistance, built-in spring 3. Transparent nib design, not blocking sight, wear-resistant and smooth 4. Alloy material refill, carbon steel sensor is stable, does not hurt the pen 5. Built-in spring mechanism to effectively protect the refill 6. Easy to install, turn left to remove and replace the nib, turn right to install and replace 7. The sense of damping is enhanced, and the painting does not slip 8. Note: Only replacement nibs will be sent for delivery, nothing else!
