Livescribe 3 smartpen ink cartridge refills medium point blue pack of 8 enjoy the precision of writing with genuine swiss made livescribe 3 ink cartridges the package includes 8 replacement cartridges black in colour with a medium ballpoint these ink refills will only work with livescribe 3 smartpens features designed for the livescribe 3 smartpen tungsten carbide ball point medium point blue colour eight ink cartridges general barcode 816108010441 product type pen refill physical