A box of quality Zebra 4C ink refills available in either Black or Blue. Each box contains 10 separately wrapped ink cartridges for your Neo smarten M1 & N2. Each cartridge has a small protective plastic cap on the nib that is removed easily prior to use. To replace the ink simply tug the empty one out from the pen, gently insert a new one, scratch off the protective nib cover and get writing. Simple! Select the right colour below and add to cart.