The 4-in-1 ballpoint pen solution for planning, organizing and structuring. Viscoglide® technology for extraordinarily smooth, gliding writing in Black, Red, Blue and Green ink. Medium line width (1.0 mm). Waterproof according to ink standard ISO 12757-2. Eco-friendly barrel made of 92% recycled plastic. Refillable with the Take 4 refill. Sturdy metal clip. Made in Germany.