Cartridge 7701 and 7704 are listed for MOOKARDILANE’s T9, S5, and K7 pens. Cartridge 7705 is listed for S5. Matching a refill requires both the cartridge series and the exact head option: “bayonet” or “round nano” alone does not identify the item to order.
This guide brings the fitting, option groups, and kit details into one place. The matrix reflects the current MOOKARDILANE product pages. Confirm the pen and cartridge combination on the order sample, particularly when adding a new series to an existing assortment.
7701, 7704, and 7705 compatibility matrix
| Cartridge series | Published fitting | T9 | S5 | K7 |
|---|---|---|---|---|
| 7701 | Double bayonet | Listed | Listed | Listed |
| 7704 | Bayonet | Listed | Listed | Listed |
| 7705 | Bayonet | Not listed | Listed | Not listed |
The pen pages use “bayonet” as the fitting description while listing specific compatible series. Keep those series numbers on the quotation. The shared fitting word does not make 7704 and 7705 interchangeable across every pen, and the matrix does not establish compatibility with third-party devices.
Compare the three cartridge series
Separate needle counts, nano names, and materials
The current catalog organizes heads into PMU, MTS, and Silicon groups. PMU and MTS are listed under stainless steel; the Silicon group is listed under silicon crystal. Specify the group as well as the option name instead of describing every nano cartridge as stainless steel.
| Series | PMU: stainless steel | MTS: stainless steel | Silicon: silicon crystal |
|---|---|---|---|
| 7701 | 1 pin; 3/5 round pins; 3/5/7 line pins | 9, 12, 24, 36, 42 needles; 3D, 5D, round nano | 3D and 5D nano variants |
| 7704 | Not listed | 11, 12, 16, 24, 36, 42 needles; round nano | 3D and 5D nano variants |
| 7705 | 1 pin; 3/5 round pins; 3/5/7 line pins | 9, 12, 24, 36, 42 needles; 3D, 5D, round nano | 3D and 5D nano variants |
Some 3D and 5D names occur in more than one group. Silicon variants also have suffixes such as D-110, Z-150, and G-185, with additional variants on the 7701 and 7705 pages. Copy the full catalog option name into the request and attach its product photo. A needle count is not a substitute for a series number.
Specify round nano cartridges in a pen kit
Round Nano appears in the MTS group of all three series. The pen pages list two round nano cartridges in the packing list, together with the pen, charger adapter, USB charging cable, and instruction manual. Define which compatible series supplies those two cartridges before approving the kit.
For example, a proposed line can read: “S5 Blue kit; Cartridge 7705; MTS Round Nano; two cartridges per kit; quantity and plug option to confirm.” This is an ordering example, not a prescribed configuration. For T9 or K7, choose from the listed 7701 or 7704 series and confirm the exact pair on the sample.
What to confirm before a refill order
- Pen family, finish, and the reference for the approved device sample.
- Cartridge series, fitting, option group, and full head name or needle count.
- Quantity of each option, distinguishing kit contents from separately packed refills.
- Packaging and label information. The product pages list single-use sterile packs; request the relevant product and batch documentation.
- Photos and written approval of the supplied pen/cartridge pair, retained for reorders.
Common compatibility questions
Does “round nano” identify one cartridge?
No. It is an option within a series. Include 7701, 7704, or 7705 and the MTS group on the line so the fitting and head are identifiable.
Can a cartridge be reordered without buying a pen?
A refill request can name the cartridge on its own line, but it should still reference the approved pen model and pair. Confirm quantities and order terms in the quotation.
For device selection, see the T9, S5, and K7 comparison. Use the OEM brief checklist to capture the kit and refill quantities, and the sample approval guide to keep that configuration traceable.
Published by MOOKARDILANE.