Original Disposable Cartridges Replacement, 0.3ml - 10Pcs, has a 4.2 rating out of 5.0.
These replacement cartridges are specially designed for pen, they are not compatible with other models
Pen uses individually-sealed, disposable cartridges for optimal safety and comfort.
What in the Box: 10 PCS 0.5ml replacement cartridges for Pen.
Note: Cartridges are non-returnable if you opened or used them(except for quality problems).