Sold as 1 Dozen. The BIC 4-Color Smooth retractable ball pen has a versatile medium 1.0 mm point. With four colors of ink in one cool pen, you can colorfully express yourself and efficiently organize notes at work, school or home. The world-renowned BIC 4-Color ballpoint pen you know and love now has 40% smoother* ink * vs the leading ball pen in the US and Canada. Not only does the versatile BIC 4-Color Smooth pen effortlessly glide as you write, but it also lasts twice as long as the leading gel pen. Change colors without changing pens. The BIC 4-Color Smooth pen writes in the four classic ink colors: blue, black, red, and green.