plastic ball pen 969ink from germany , Dia of 0.5 or 0.7 mm ,smooth wringting..For promotion use and can print customers' LOGO on the flat barrel .985ink from germany , Dia of 0.5 or 0.7 mm ,smooth wringting..For promotion use and can print customers' LOGO on the barrel .984Aink from germany , Dia of 0.5 or 0.7 mm ,smooth wringting..For promotion use and can print customers' LOGO on the barrel or ...