Bright and beautiful body Colors have appeared in the "Acroball multipen" Series! ”Acroball 3 + 1" Is a multi-function pen with a ballpoint pen and Mechanical Pencil that uses the newly developed "Acro ink" By the Pilot. "Acro ink" Is a low-viscosity oil-based ink with a viscosity of about 1/5 compared to conventional oil-based ink. In addition, the blending of the lubricant reduces the frictional resistance of the ball at the nib, resulting in smooth rotation and smooth writing and dark handwriting. Of course, it has excellent water resistance Unique to oil-based inks. The grip part has a “tire pattern grip” that can be gripped with smooth ink so that writing can be controlled easily. The clip is equipped with a movable lift clip that will not break even after 100, 000 times. The ball diameter is 0. 5mm and the ink colors are black, red, and Blue.