The OEM BeGreen V Board Master Medium Bullet Marker is a set of 5 dry-erase markers made from a high percentage of recycled materials. These markers meet ISO 14001 and 14021 standards, ensuring an environmentally friendly choice. The innovative Twin Pipe Feed system provides a smooth and steady ink flow, while the visible, long-lasting ink supply delivers vibrant colors for clear visibility from a distance. For continued use, these markers can be refilled with Pilot V Board Master refills.