Marker bodies are color-coded for quick nib identification.
For example, the black body color identifies the brush marker, and the dark gray color identifies the chisel marker. The white marker body is limited to the OLO ZERO (colorless solution).
All OLO nibs work with all OLO Replacement Ink Cartridges and half-markers.
** Please note: For every 2 markers that you purchase, you'll receive a connecter.