Features BLX ink, black ink tinted with color. Differentiate yourself with deep, rich business colors. Patented airplane-safe technology prevents leakage on flights. uni-flow system delivers a smooth and steady flow of water-resistant ink, ensuring skip-free writing with a consistent color. Exclusive pigment-based ink forms an indelible bond with paper for intense coloration and document security. Point Size: 0.8mm; Point Type: Bold; Ink Color(s): Purple/Black; Pen Type: Roller Ball.