Whiteboard and flipchart marker with bullet tip, line widths 1-3 mm. The pen can be refilled quickly and easily with an ingeniously simple Quick Refill system: remove the plug, insert the Maxx Eco 655 cartridge, replace the plug and you're done. The marker is immediately ready for use again and each cartridge is the equivalent of a new pen. The ink can be removed from whiteboards with a dry cloth without leaving residue and will not seep through to the page underneath on flipcharts. The cap-off ink does not run dry even if the cap is removed for 2-3 days. It has a low odor and is free of toluol and xylol. The cap has a clip and fits neatly on the end of the barrel. Four Whiteboard markers, refills and attached eraser all in one compact kit. Black, Red, Blue, and Green markers each with an additional easy refill cartridge included. It's like getting 2 markers for every 1.