BIC America BU311BK BU3 Retractable Ballpoint Pen, 1.0 mm, Black BIC America BU311BK BU3 Retractable Ballpoint Pen, 1.0 mm, Black With side click retraction for added convenience and a sleek barrel design, BICR BU3? Ball Pens offer good looks and performance at a great value. BU3? also features a specially designed grip for comfortable writing.