SUNLU PETG Filament Refill, 1.75 mm, 4 kg, Four Colors

Colors: SUNLU PETG Filament Refill is a four-color, 1.75 mm refill kit for compatible reusable spools. It is intended for buyers who already have an empty SUNLU or Bambu Lab reusable spool, since the listing says the refill cannot be used directly.

At a glance

Refill filament requires installation on an empty reusable spool before use.
SUNLU says the refill fits reusable SUNLU and Bambu Lab filament spools. It also describes printing a spool for use with most 3D printers.
The listing describes PETG as tough and impact resistant, and claims the filament is engineered to reduce stringing and clogging.
The recommended settings are 240-260C at the nozzle, 60-70C at the bed, and 50-200mm/s printing speed.

Price

$39.98Save 17%

Reference price: ~~$47.99~~

Price checked: Nov 14, 2026

View offer

Often bought together

SUNLU PLA+2.0 3D Printer Filament, Black, 4-Pack (4KG) | Upgraded PLA+ Filament 1.75mm, Tougher & Stronger, Neatly Wound, +/-0.02mm Accuracy, Individually Vacuum Packed

$43.34

Pros and cons

Pros

Four listed color options provide a palette for multi-color projects without buying four separate materials.
The 4 kg listed weight is suitable for buyers planning multiple or larger prints.
The listed diameter and recommended PETG settings give buyers practical setup details to compare with their printer.

Cons

This is refill filament rather than a ready-to-load spool, so using it requires a compatible empty reusable spool or a printed spool.

Technical specifications

8 specifications

Identity
Brand	SUNLU

Dimensions and installation
Weight listed	4 kg
Filament diameter	1.75 millimeters

Materials and protection
Material listed	Polyethylene Terephthalate Glyco
Colors listed	Beige+coffee Brown+olive Green+oak

Printing guidance and claimed performance
Recommended nozzle temperature	240-260C
Recommended bed temperature	60-70C
Recommended printing speed	50-200mm/s

What to know before buying

The listing claims compatibility with SUNLU and Bambu Lab reusable spools, but feedback is mixed on fit, winding, tangling, color consistency and adhesion. Confirm your spool fit and allow for possible variation in handling and print results.

Who is it for?

A good fit for

3D-printer owners who already have a compatible empty SUNLU or Bambu Lab reusable spool.
Buyers looking for PETG refill material in beige, coffee brown, olive green and oak.
Users who can tune printer settings within the listed nozzle, bed and speed ranges.

Less suited to

Anyone who needs filament ready to load on a spool without first transferring or mounting the refill.
Buyers whose printer setup cannot accommodate the listed PETG temperatures or filament diameter.

SUNLU PETG Filament Refill, 1.75 mm, 4 kg, Four Colors · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 522 ratings

5 stars79%79%
4 stars11%11%
3 stars3%3%
2 stars2%2%
1 star5%5%

Customer feedback describes good quality, perceived cost-effectiveness and smooth printing with good detail. Buyers also report mixed experiences with winding, tangling, color consistency, adhesion and spool compatibility. Those concerns matter here because this refill must be mounted on a reusable spool before printing, and fit or handling can affect setup. The listing’s spool-compatibility and print-performance claims should not be treated as assurances that every buyer will have the same experience.

Positive themes

Customers describe the filament as good quality and cost-effective.
Feedback highlights smooth printing and good detail.

Mixed feedback

Reports differ on whether the filament is neatly or loosely wound and whether tangling occurs.
Color consistency, adhesion and spool fit receive mixed feedback.

Frequently asked questions

Can this refill be loaded directly into a printer?

No. The listing says the refill cannot be used directly and needs to be installed on an empty reusable spool first.

Which spools does SUNLU say are compatible?

The listing names reusable SUNLU and Bambu Lab filament spools. It also mentions printing a spool for use with most 3D printers, but does not include a printed spool.

What print settings does the listing recommend?

It recommends a nozzle temperature of 240-260C, a bed temperature of 60-70C and a printing speed of 50-200mm/s.

What are customer feedback themes?

Feedback reports positive impressions of quality, value and printability, but experiences vary on winding, tangling, color, adhesion and spool fit. These are reported opinions, not guaranteed outcomes.