J-Roller Roller Ball Stick Gel PenFeatures a grooved finger-grip so the pen fits perfectly in your hand. You'll appreciate the smooth, scratch-free writing quality. See-through barrel allows you to monitor ink supply. Water-based pigment gel ink is acid-free and archival so it won't fade or bleed. Special Ink Type: Gel; Pen Style: Stick; Ink Color(s): Black.