Bic atlantis premium ball pens feature bic easy glide ink for smoother more consistent writing and a medium 10mm tip perfect for general handwriting with the retractable format just click the top to retract or extend the nib this pen features a sturdy curved barrel for ergonomic comfort and a polished metal clip for pocket placement premium quality medium ball pen cushioned grip for comfort and control easy glide technology for smoother performance medium 1mm tip for 04mm line width erg