Dry-erase markers with a fine point and bullet tip create vibrant marks on dry-erase boards, glass and most other nonporous surfaces. Three Chamber Ink System allows ink to last up to two times longer than standard dry-erase markers. Pressurized ink flows directly to the nib to prevent drying out. Barrel has an ink gauge to monitor ink supply. Soft rubber grip provides writing comfort and control. Use pocket clip for easy storage. Grip and clip color matches ink color. Markers are nontoxic and nonrefillable.