Shake or bass. Unique technology that advances the tip by shaking the pencil. Shaker mechanism, which allows the end to be revealed by swinging forward with the special feeding system placed inside the mechanical pencil. It is longer life and durable with the internal mechanism made entirely of metal. Soft and ergonomic place of hold Protected end with lock mechanism Stylish and modern body design with 3 different colors 0.5 mm end thickness. Color: Black & Green
