VI-HB-1mm VI-2B-1mm Refill	All YOROPEN has international safty SGS certification Non toxic lead re-fill. Nontoxic plastic material. Ventialted cap-meets SGS safety requirements. Protective structure to avoid harming fingers. YOROPEN-VI YOROPEN-VI is designed for younger student and regular users. VI can reduce pain and pressure from long period of writing. It’s also a good tool for children to learn the better way to write. Writing with YOROPEN can correct bad writing posture, even if it's been a habit for years. By ussing YOROPEN the improvement in writing will be seen immediately.