説明
Advanced free ink system with Cartridge
When one cartridge used up , you can put on a new cartridge and keep on writing .
1 Blister card includes 2 rollers with 4 roller catridges.
Tip size : Needle tip 0.38/0.5/0.7
Ink : Dyebase ink black ,青 ,赤 ,緑
Pigment ink black , 青 .
Smooth continuos writing , quick dry ink , no smearing , no smudge .