Writing Instrument Student Office Supplies Pen Ink Sac Ink Cartridge Replaceable Refill Ink Bag

Label:Yes Applicable type: General purpose Ink diameter: 2.6mm, 3.4mm Size: 50mm Note: blue is erasable ink, black and dark black are non-erasable ink Quantity: 50PC Packing: OPP bag Name: Pen can replace ink bag Package Includes:50pc* pen ink

Notes: 1. Due to light and other reasons, there may be differences in color. 2. Products are manual measurement, there is slightly measuring error. 3. Thank you for your kindly understanding.