Cello Butterflow Simply Ball Point Pen, 0.7mm, 12/box, BlueWrite as smooth as butter using this Cello Butterflow Pens. You are sure not to stop writing as these pens glide their way on the paper with the help of Elasto grip that promotes pressure free writing. This Cello Butterflow Pen with Swiss metal tip 0. 7 mm, nickel silver is the key element in providing a smooth writing experience while using these pens. easy glide, no skip nickel silver tip elasto grip 0. 7 mm 12 box Blue