The BIC M10 is the classic retractable ballpoint pen. Comfortable to hold, reliable, inexpensive and a smooth-writer, it comes in the basic colours of black, blue, red and green. Push down the end button to extend the tip and hit the side button to retract. Barrel colour denotes ink colour. Practical one-piece pen Retractable side button for ease of use Resistant and perfectly spherical ball in the tip Quality ink Clear section to show ink supply