Design Series Black Line 3 Colors (Black, Red, Blue) 0.5mm New, Unused Retail Price: ¥660 (tax included) Features: The "Frixion Ball 3 Slim" is a slim pen with a maximum diameter of 12.8mm, making it even easier to use and more portable. It also has a smooth, step-less shape that easily fits into a planner's pen holder. This is a convenient 3-color ballpoint pen that allows you to switch between three colors with a single pen and erase repeatedly. The ink colors are the basic three colors: black, red, and blue. The pen tip is an extra-fine 0.5mm type. It is suitable for writing in small spaces such as planners and documents. The clip uses the manufacturer's original lift clip. It can securely clip onto thick items and is durable, tested to withstand 100,000 clip cycles (according to manufacturer's test data).