Our mission was simple: to brighten up your writing with Paper Mate InkJoy 50ST Ballpoint Pens. Developed with reliably fluid ink that starts fast and writes smoothly, writing is never a drag. These smooth-writing pens also feature vivid ink in three exciting colors so all your writing suddenly becomes more fun. Meanwhile, the stick pens have a 1.0 mm medium point tip that makes your messages easy for the world to see. Liven things up and spread joy with Paper Mate InkJoy Ballpoint Pens. Pen Sub-Brand & SKU Line: InkJoy 50ST Pen Style: Stick Pen Type: Ballpoint Pen Refillable Yes/No: No.