SIGNO 207 BLX retractable gel pens feature black acid-free ink with a fine point .7mm nib and a hint of rich color. Their Super Ink protects against water, fading and fraud. The premium grip provides superior writing comfort and control. The 4-Color Set includes green/black, purple/black, red/black and blue/black ink pens. The 5-Color Set includes brown/black, green/black, purple/black, red/black and blue/black ink pens.