The Lumber Marking Crayons are particularly useful in woodworking, construction, arts and crafts, packaging, and textile industries. Whether you need to mark measurements, identify different materials, or create vibrant artistic designs, our crayons are up to the task.SpecificationColor: BlackMaterial: Paraffin WaxSize: 10 x 1.4cm / 3.94 x 0.55 inch(L*W)Packing List: 24 x Lumber Marking CrayonsAdvantageMade from Paraffin Wax which ensures smooth and consistent marking on a variety of surfaces, such as on wood, glass, ceramics, metal, cartons, cloth, and stone. and you can enjoy a smooth writing experience, allowing for clear and precise markings every time. Each crayon is conveniently wrapped in a layer of protective paper, preventing any dirt or dust from affecting the quality of your markings.