A long-selling standard uni-pencil! Features: A uni-brand that is popular from students to professionals. This is a long selling uni-pencil! The pencil core material is graphite and clay, which is fine and uniform, so you can write with a more black and smooth writing experience. It is also a pencil core that is not easy to break. The shaft color is a combination of traditional Japanese shrimp brown and wine red for a luxurious feel.