Frixion Ball 4 Type: Multi-color gel ink ballpoint pen Color: Gradation Purple Size: Maximum diameter φ 13.8mm, total length 145mm Tip: 0.38mm (ultra-fine) Mechanism: Slide lever type Ink: Frixion ink Ink colors: Black, Red, Blue, Green Price: 880 yen (800 yen excluding tax) Condition: Brand new, unused *Price negotiation not accepted! The Frixion Ball 4, a 4-color ballpoint pen that erases with friction. The Frixion Ball 4 is a convenient 4-color ballpoint pen that allows you to use four colors in one pen and erase and rewrite as many times as you like. Ink colors are black, red, blue, and green. The clip uses the original lift clip. It can securely clip onto thick items and won't break even after being clipped 100,000 times.