Instant purchase is OK. Unopened item. Model used by Prime Minister Sanae Takaichi This is a multi-function pen that combines a 0.5mm oil-based ballpoint pen in black, red, blue, and green, and a 0.5mm mechanical pencil. With its groundbreaking ink, the pen achieves a smooth writing feel with low writing resistance that becomes addictive. In addition, the ink dries quickly, reducing the stress of getting your hands dirty. The twin ball mechanism prevents ink backflow, and a spring tip is built in to prevent ink leakage from the pen tip.