Make your ideas easy to read and understand with BIC Intensity Advanced Dry Erase Markers. These chisel tip dry erase markers create neat, precise lines, making them perfect for detailed writing. Featuring liquid ink, BIC Intensity Advanced Whiteboard Markers provide a smooth and consistent ink flow, mark clearly on whiteboards and other non-porous surfaces, and erase easily for quick cleanup. The long-lasting ink in these dry erase board markers allows for hours of uninterrupted writing. Plus, the ink supply is visible via a clear window in the barrel, so you can always see when you're running low. Chisel tip creates neat lines. Liquid ink flows smoothly and consistently to clearly mark whiteboards and other non-porous surfaces. Long-lasting ink allows for uninterrupted writing. Visible ink supply level. Erases quickly for easy cleanup. Non-toxic, ACMI-approved and low odor for use at work, school or home. Contains black, blue, red and green markers. Long-lasting ink allows for hours of uninterrupted writing; visible ink supply level lets you see when you're running low. ACMI Certified AP Nontoxic. For detailed information see www.acmiart.org. Less harsh chemicals - made with fewer harsh chemicals, or safer chemicals than typical alternatives, helping reduce your use of and exposure to substances that may be more harmful to your health and the environment.