UPSIDEUP.store :: Replacement Brush Nibs, 0.5-7 mm – for Neuland No.One® Art, Extend the life of our refillable Neuland markers significantly by replacing their nibs. This is what we call environmental thinking and acting. Alt + 010 Important: Replace nibs of the same kind only as it might cause some problems with the flow of ink. Alt + 010 Technical details: Line widthis: 0.5-7 mm Material: nylon