The BIC Intensity Advanced whiteboard markers are ideal for schools, offices, and homes. These versatile markers feature a chisel tip for quickly creating broad or fine lines. A visible ink supply makes it easy to check if you're running low. The tank-style markers work well on most non-porous surfaces and erase easily with a cloth or tissue. | BIC Intensity Advanced Chisel Tip Gel Dry Erase Whiteboard Markers - 4 Pack