Our coloured pencils are mainly made of wood. In addition, these pens are non-toxic and no chemicals are used in the production process. So they are safe for children. You can give these rainbow pens to your loved ones and give them a unique gift. Smooth writing, not easy to break. Easy to hold and write for a longer period of time. ? DIY designs with coloured pencils. As a class prize, teaching prize, birthday gift or Christmas gift. Specification: Material Type: Wood Product quantity: 12/24 Colour: multi-coloured (7 in 1). Dimensions: 6.82 inches/17.3 cm total length. Refill diameter: 3.3 mm. Weight: 70 g. Packing list: 12 pencils, 1 eraser, 1 pencil sharpener. 24 pencils + 1 eraser + 1 pencil sharpener If you have any questions about our products, please feel free to contact us. We will give you a satisfactory answer as soon as possible. ??