Hy-Ko Permanent Sign Marker a nontoxic, fast-drying, and nonfading permanent ink that marks most surfaces with ease. I for home, school, office, and industrial use, this marker delivers consistent, smooth ink flow in thick, medium, or thin lines. Its tough, durable wedge design ensures reliable performance, while meeting safety standards for peace of mind. The marker comes in a classic black color, making it a versatile choice for all your marking needs. Model Number: 40622