Discover our BIC® 4 Colours® Bicolor! Its uniquely shiny metallic effect combines two brilliant colours on the barrel, for the most creative designs and a metallic look with an artistic touch! Our BIC® 4 Colours® ballpens have an average writing length of 8,000m (SGS tests - average writing length for blue, black, red and green cartridges). Our iconic BIC® 4 Colours® is more sustainable now, with 13% less plastic in the upper part!