The Faber-Castell Tri-Flow Ballpoint Pen Set Wallet of 10 features an ergonomic triangular barrel designed to deliver an exceptionally comfortable, fatigue-free writing experience. The high-intensity, smooth-flowing ink provides an instant start and smudge-free performance on all standard office and school paper types. Equipped with a precision 1.0mm medium mini-tip, this vibrant assorted color set is a reliable everyday choice for color-coded notes, sketching, and assignments.