Aero SmoothTech Ballpoint Pens offer the ultimate in writing performance with a sleek and modern design. SmoothTech Ink delivers smooth writing so they are great for home, work or school. Plunger on top retracts the 1.0mm point when you're not using it to protect your belongings from stray marks. Retractable ballpoint pens also feature a soft comfort grip and large clip for easy attachment. Pens write in black ink.