Pentel Rolly - Black Retractable Ballpoint Pen - 0.7mm - Box of 12 The Rolly from Pentel features a uniquely shaped rubber grip, designed to give hours of comfortable, fatigueless writing. Pentel's innovative low-viscosity ink gives a smooth writing experience. The 0.7mm nib delivers a fine 0.5mm line. Each pack contains 12 Black inked pens.