These Empty Markers are the key to your artist toolset giving you the ability to have multiple different paint or ink marker colors at once.  You can easily fill these paint markers with high-end MTN Street Paint or Street Ink refills or your own ink of your choosing! And the tips and valve system components are totally compatible with the Water Based paints. The high-quality valve gives you excellent control over the flow of color and prevents spills and splashes. They are ideal for canvas work, sketches on paper, graffiti, a run in the studio or on walls. The markers come with a pump valve and has different tips. It’s pump action gives you control and allows for drips as needed in a fine sized line. This range of refillable markers compliment the Dabbers Get your replaceable tips here See below for more Product and Usage information