... writing 4)many kinds customer can choose SpecificationsLiquid ink roller pen 1.roller ball pen 2.business signature ... service is ok------------------------------------Liquid ink roller pen* The ink cartridge is refilled* Smooth writing,good ink cartridge* Ink:red,blue,black,also ... available,like design,color,logo,package etc.* Suitable for school use,office stationery,promotion gift etc* Welcome ...