Maximize classroom visibility on your whiteboard with Visi-Max Dry-erase Markers. Durable chisel tip delivers larger lines for visibility from 40'. Vibrant colors erase easily and completely without staining or ghosting. Grip is ridged for an easy grasp. Ideal for students and teachers, these low-odor broad-line markers work on all standard whiteboard surfaces. Dry-erase markers are certified AP nontoxic. This set of four markers includes vibrant red, green, blue and black.