The Monteverde Soft Roll mini ballpoint refill offers the latest low viscosity ink for the smoothest writing experience ever! Features high quality metal refill, nickel plated brass tube and Swiss tip. The Monteverde US Soft Roll mini ballpoint refill transforms your ballpoint pen into a miracle of writing technology with the latest breakthrough in ink technology. Free flowing, low viscosity black ink provides an unprecedented writing experience to those using a ballpoint pen. Suitable for the Monteverde One Touch Stylus Tool Pen and may fit other multi-function and mini pens. Sold in packs of four pieces.