Features: Advanced antioxidation technology prevents tip and ink drying, ensuring long performances for frequent users of white and black markers in archival applications. Archival quality ink color (white/black) housed in friendly PP casing meet international safety standards while resisting chemicals degradation over time. for students, office professional, and artists requiring oxidation resistant tool for document marking, creative projects, or educational materials. Maintains consistent flows during rapid note takings in classrooms, precise artwork on dark surfaces, or labeling sensitive document in humid environment. The ergonomic oxidation resistant tip glides smoothly across paper, plastic, and photo surfaces without smudging, backeds by laboratory tested ink stability. Specifications: Materials: PP Color: White, Black, Oxidized Pen(optional) Package Includes: 1PC Pen note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.