The 111EM empty marker from Molotow has a refillable body and is equipped with a replaceable 2mm tip. It is easily refillable and offers consistent paint flow due to the patented Flowmaster valve and capilliary system.
The marker is compatible with nearly all paints and inks. Individual colour shades can be mixed and stored easily.
There are other nib styles available which fit this marker, including the Specialtech 1mm tip.