The thick triangular enlightenment pencil can correct the grip and write easily. The thick pencil holder is suitable for preschoolers: it is easy to grasp and has strong resistance to breaking. It can guide the correct grip of the pen. Three specifications are suitable for children of different ages, 6B pencil lead is soft, suitable for children who are not strong enough to use the pencil; 4B pencil hardness is moderate, suitable for primary contact writing children; The lead core of 2B pencil is hard, suitable for children before and after primary school.