Shop Dr Pen cartridges by exact model
Start with the model printed on your device. Connector and locking geometry can differ even when two cartridges share a pin count or look similar. Choose the matching model collection first, compare the connector, and keep the pack sealed until the fit details are confirmed.
How to choose a replacement cartridge
- Confirm the complete model name. Keep distinctions such as M8 versus M8S and A6 versus A6S.
- Open the dedicated collection. Use the collection as the first compatibility filter.
- Compare the connector. Check the stem profile, tabs, collar and locking shape before opening the pack.
- Select the catalog option. Compare pin-count or nano listings only inside the confirmed model family.
Prices, pack quantities and stock can change. Use the live collection and product page as the final purchase record. This Shop provides product-selection information rather than procedure or outcome guidance.
Cartridge guides and comparisons
- Complete cartridge selection guide
- Model compatibility chart
- Model-label checklist
- Connector-shape checklist
- M8 versus M8S cartridges
- A6 versus M8 catalogs
- M8S 12 versus 36 versus 42 pin
- Round nano versus square nano
Dr Pen cartridge FAQ
How do I choose the correct Dr Pen cartridge?
Read the exact model on the device, open the matching model collection, compare the connector and locking shape, and only then choose a pin-count or nano option listed for that model.
Are Dr Pen cartridges interchangeable between models?
Do not assume they are. A shared pin count or similar housing does not prove that the stem, tabs, collar, and locking geometry will fit another device family.
What does the cartridge pin count mean?
Pin count is a catalog description for the listed tip layout. It is not a universal connector standard and does not prove compatibility with another device model.
What is the difference between round nano and square nano?
The direct catalog difference is the visible tip-face shape. Confirm that the round or square nano product is listed for the exact device model before comparing the shape.
Should I keep the cartridge pack sealed while checking compatibility?
Yes. Confirm the model, connector, selected option, pack quantity, and return terms before opening. Follow all handling instructions printed on the product packaging.