Rolling Ball Retractable Gel Black Ink Pens Desirable Smooth Writing Pen is the preferred choices for office and study, multiple colour pens will add more joy to the monotonous life and increase the enthusiasm for study and work. Quick Dry Gel Ink Roller Pens These retractable rolling ball gel ink pens adopt reliable ink which will not easily fade or smudge. Multi-function Pen Clip You can clip the ballpoint pens to the book or the bag, which is convenient to carry and prevent loss. Multi-function Pen Clip You can clip the ballpoint pens to the book or the bag, which is convenient to carry and prevent loss. Quantities: 10 pieces x Gel Black Ink Pens Materia: Plastic Ink Color: Black Pen body color(10 colors): retro cyan, retro blue, retro red, retro green, retro purple；bean Paste Green, haze blue, oatmeal, grey pink, deep grey. Wrting Nib: Gel pen 0.5mm