Schneider One Business Pen Black is a stationary you can use for both school and offices.  This pen has an Innovative super-flow-system guarantees consistent ink flow from start to finish.

It also has a line width approximately 0.6 mm in Black, Red, Blue and Green inks. Waterproof according to ink standard, ultra-Smooth tip, sturdy metal clip and rubberized grip zone to promote relaxed writing without hand fatigue

Large ink reservoir and level indicator to ensure every drop of ink is used. Cap-off ink does not dry up, even if the cap is removed for 2-3 days