Bic cristal xtra smooth ballpoint pen, black ink, 1mm, medium, 24/pack cristal xtra smooth is the pen america grew up with. It has proven reliability, writing up to 35% smoother than traditional ballpoint ink. It features a roll-proof hexagonal-shaped barrel so it won’t roll off surfaces. The clear barrel offers a visible ink supply. larger quantity quotes available. Please call 1-888-978-7759. this product arrives to most customers in 2-3 business days.