Monteverde USA Capless Gel Refill To Fit Montblanc Ballpoint Pens - Medium Point, Blue (6 Pack) (M433BU) The Monteverde USA Soft Roll offers the latest technology for the smoothest writing experience, and fits Montblanc Ballpoint Pens. Low viscosity ink Large capacity metal refil Nickel silver tube tip *Monteverde USA refills are not manufactured, licensed, or endorsed by the pen manufacturer referred to in this listing. The trademarks of the pen manufacturer are identified only for the purpose of providing refill compatibility information.