Expo LowOdor Dry Erase Chisel Tip Markers Bold Point Type Chisel Point Style Assorted 16 Set Dryerase markers contain specially formulated lowodor, dryerase ink They are perfect for classrooms, small offices and homes They can be used on most whiteboards, glass and nonporous surfaces Dryerase markers with chisel point deliver consistent color quality for bold colors and great erasability They are certified AP nontoxic and conform to ASTM D4236