Wood-free lead refers to a pencil made of plastic as the raw material of the pen holder.

Pencil is a special pen for writing and sketching, which has a history of more than 400 years. Among them, there are many kinds of pencils for sketch, which are divided into three stages of development, namely graphite, wooden pen holder and pencil with cap. In addition, its colors are red, white, black and white, yellow and black.