To let you get the best experience we tested hundreds of inks which should be able to resist vibrations, nib should resist shocks and all of that should be able to draw constantly patterns and write perfectly. That's how we stopped our choice of high-quality Japanese gel ink with the tungsten tip.
Ink colors: black, blue, crimson (red), dark orange, gold (yellow), deep pink, lime green, navy (purple)
Compatibility: INKI Pen
Tip size: 0.7mm
Refills in the box: 5