High-end Exquisite Practice Pen For Calligraphy Boys And Girls Business

Product information:
Pen tip: 0.4EF is approximately equal to a water pen 0.55-0.6, and 0.5F is approximately equal to a water pen 0.7-0.8
Ink collection: rotary ink collection device+34 caliber ink bag dual use
Size: length 138mm * diameter 11mm
Material: Metal