Easily mark surfaces notorious for being difficult to write upon with these BIC markers featuring ultra-fine-point tips and rubber grips. The design of the permanent markers is intended to emulate the control and comfort of a pen. Leaves permanent marks on surfaces that are typically hard to mark including glass metal coated papers and CDs. Ultra-fine point offers pen-like control with marker-style permanence and vividness. Ink resists drying out when left with the cap off for up to 2 weeks. Rubber grip provides comfort and control. These black BIC ultra-fine markers come in a 12-pack. Less harsh chemicals - made with fewer harsh chemicals or safer chemicals than typical alternatives helping reduce your use of and exposure to substances that may be more harmful to your health and the environment.