VISION ELITE BLX rollerball pens feature airplane-safe technology to eliminate in-flight leaks and have a smooth even flow of black-infused colored ink. The pen is designed with a durable metal clip, a sleek bend-resistant stainless steel tip and a tungsten carbide rollerball nib. Their innovative Super Ink protects against water, fading and fraud. The 5-Color Sets in micro point .5mm and bold point .8mm include blue/black, red/black, brown/black, green/black and purple/black ink pens.