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

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