Custom Highlighters, Click n' Glo - 5 in 1 Highlighter & 4 Color Pen Combo - Quick Dry & Non-Toxic, Why use two writing instruments when one will do? The "Click 'N Glo" dual function pen is a unique writing instrument that combines a 4 color (black, blue, red and green) retractable ball point pen at one end with a fluorescent cap off highlighter on the other end. Non-Toxic, non-smearing, dries quickly. ... #8505 $1.91/each.