Firing temperature: 1100°-1300°C Color: 10 colors Features:Simple and easy to use, rich in color, lead/cadmium free, environmentally friendly and healthy, easy to express the hand-drawn style of sketches. Note: The pecil is underglaze color essence, and the hardness is lower than that of ordinary pencils. Be careful when sharpening pencils. Pencil sharpeners can easily damage the center. It is recommended to sharpen the pencil with a knife to keep the tip thick.