Morandi low saturation colour system, simple and lightweight modelling design, 7-colour classic colour matching, high-value learning goodies.0.5mm bullet nib, anti-collision wear-resistant, smooth writing, with a push-out core, effective protection of the nib. Replaceable refill design, easy to change the core, reduces the consumption of pen shell, more economical and practical. The pen clip design, strong clamping force, full toughness, ease to carry out, and wide pen clip, can meet large-area printing.