Specification:Material: CharcoalFour diameters: 9mmx2Pcs/6.5mmx2Pcs/5.5mmx3Pcs/4.5mmx3PcsPackage Include: 10pcs Charcoal Pencils with Metal BoxProduct Advantages:- Non-toxic, safety, lead-free and durable. – 100% high quality charcoal, not easy to drop chips, fine carbon, thick black. – Smooth painting, easy to color, used for sketching, oil painting, etc. – This high-quality charcoals is made by carbonization many times. It is characterized by fragile texture, looseness, and softness when used, which is suitable for rapid large-area painting. – Break-resistant and medium-soft to make long-lasting, smooth painting strokes.- Our sketching pen with great shading and blending capability, crafting detailed illustrations and textured shading like a professional artists. – The drawing pencil set is a nice gift for artists, beginners, students, kids who have an interest in the art of drawings:1al measurement, there may be minor differences in size.2 to the screen display, the color of the item may differ slightly from the picturendly Customer Service: Customer satisfaction is our pursuit. If any problem, please feel free to contact us and we will reply at first sight.