Quick Summary
SUNLU PETG Filament Refill is a 1.75mm no-spool filament refill in matte black, supplied as 4 rolls of 1kg each. It is described as a refill format for reusable spools, with compatibility mentioned for SUNLU 2025 new spool, Bambu Lab spool and most FDM printers.
The refill format is intended to reduce the need for traditional spools. If you already use a compatible reusable spool system, check the exact spool version before ordering.
Who It Is Best For
This is for buyers who want PETG filament in a refill format and already have a compatible reusable spool setup. It also suits users looking for a 1.75mm filament option in matte black for supported 3D printers.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | SUNLU. |
| Filament type | PETG filament refill for 3D printing. |
| Diameter | 1.75mm, so it should be checked against your printer’s filament requirement. |
| Total quantity | 4kg total, supplied as 4 rolls of 1kg per roll. |
| Colour | Matte black. |
| Format | No-spool refill for reusable spools. |
| Compatibility | Compatibility is mentioned for SUNLU 2025 new spool, Bambu Lab spool, most FDM printers, AMS and AMS Lite. |
| Compatibility note | Not compatible with SUNLU 2nd detachable spool. |
| Speed claim | Described as high speed filament with a stated print speed of up to 600mm/s. |
Why Buyers Choose It
- The 1.75mm diameter gives a clear check against printer filament requirements.
- The 4kg total supply, split into 4 x 1kg rolls, is useful for buyers planning multiple prints.
- The refill format is intended for reusable spools, which reduces the need for a traditional spool.
- The compatibility note helps buyers confirm whether their spool system matches the refill format.
Real World Use
This filament is intended for 3D printing with supported FDM printers and compatible spool systems. The matte black finish and refill format make it a straightforward choice for users who already manage their filament through reusable spools.
What To Know Before You Buy
Check that your printer uses 1.75mm filament and confirm that your spool system matches the stated compatibility, especially if you use a SUNLU spool. The product is not compatible with the SUNLU 2nd detachable spool. If you are buying for AMS or AMS Lite use, confirm your setup before ordering.
Pros: The 4kg supply and refill format suit buyers who want multiple rolls for compatible reusable spool systems.
Cons: The spool compatibility is specific, so buyers need to check their exact spool version carefully.
Common Buyer Questions
Is this 1.75mm filament?
Yes. The filament is 1.75mm, so it should be matched with printers that use that size.
How much filament is included?
4kg in total, supplied as 4 rolls of 1kg each.
Does it work with reusable spools?
Yes. It is described as a no-spool refill for reusable spools, with compatibility mentioned for SUNLU 2025 new spool and Bambu Lab spool.
Is it compatible with every SUNLU spool?
No. It is not compatible with the SUNLU 2nd detachable spool, so the exact spool version matters.
Final Buying View
Choose this SUNLU PETG refill if you need 1.75mm PETG in matte black and already use a compatible reusable spool setup. Confirm the exact spool version and printer compatibility before ordering.






