SUNLU PETG Filament Refill, 1.75 mm, 4 Colors

Colors: SUNLU PETG Filament Refill is a spool-less 3D printer filament listing in black, white, red, and Klein blue. It requires a compatible empty reusable spool before use, so buyers without one should plan for that separately.

At a glance

Refill filament is not ready to load on its own, the listing says it must be installed on an empty reusable SUNLU or Bambu Lab spool.
The listing recommends printing at a nozzle temperature of 240-260°C, bed temperature of 60-70°C, and speed of 50-200mm/s.
SUNLU claims the PETG refill is compatible with its own and Bambu Lab reusable spools, and says a spool can also be printed for use with most 3D printers.

Price

$37.99Save 19%

Reference price: ~~$46.99~~

Price checked: Nov 11, 2026

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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

$45.89

Pros and cons

Pros

Four listed colors provide options for multicolor projects across separate prints.
The refill format can reuse a compatible empty spool instead of requiring a new spool with each refill.
The listed print settings provide a starting point for tuning a PETG setup.

Cons

Requires a compatible empty spool, which is not described as part of the product listing's supplied contents.

Technical specifications

8 specifications

Identity
Brand	SUNLU

Material and color
Material listed	Polyethylene Terephthalate Glyco
Color	Black+white+red+klein Blue

Dimensions and installation
Item diameter	1.75 millimeters
Weight listed	4 kg

Suggested printing settings
Nozzle temperature	240-260°C
Bed temperature	60-70°C
Printing speed	50-200mm/s

What to know before buying

The listing describes this as PETG refill filament and gives a material value of “Polyethylene Terephthalate Glyco”, confirm the material wording and that the refill fits your spool before purchase. Its toughness, impact resistance, reduced stringiness, clogging, and cost claims are manufacturer claims, not independently verified here.

Who is it for?

A good fit for

3D printer owners who already have a compatible empty SUNLU or Bambu Lab spool.
Users looking for PETG refill filament in four listed colors and prepared to tune print settings.

Less suited to

Buyers who need filament ready to mount without sourcing or preparing a compatible empty spool.

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

Customer reviews on Amazon

4.5 / 5 · 519 ratings

5 stars79%79%
4 stars10%10%
3 stars4%4%
2 stars2%2%
1 star5%5%

The supplied aggregate rating is 4.5 out of 5 stars, but no rating count or customer comments are available. That figure alone cannot establish how consistently the refill performs or whether buyers found spool compatibility and print settings convenient, those details matter for use because the listing requires a compatible empty spool.

Frequently asked questions

Can this refill be used without a spool?

No. The listing says it cannot be used directly and must first be installed on an empty reusable SUNLU or Bambu Lab spool.

What print settings does SUNLU recommend?

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

What colors are listed?

Black, white, red, and Klein blue.

What do customers say about it?

Only an aggregate rating is supplied: 4.5 out of 5 stars. No review text or rating count is provided, so it does not indicate which aspects buyers liked or disliked.