Product name: underglaze colored pencils
Burning temperature: 1100 degrees-1300 degrees
Size: see picture
Color: 10 colors 
Specification: 10pcs set
Purpose: Underglaze painting
Features: Simple and easy to use, rich in colors, colorful, easy to express the hand-drawn style of sketching.

Note: The pen core is made of underglaze color concentrate, and its hardness is less than that of ordinary pencils. Please be aware when sharpening the pencil. The pen sharpener is easy to damage the pen core. It is recommended to use a knife to sharpen the pencil and keep the pen core thicker.