1 / 7SUNLU PLA+ Filament Refill, 1.75 mm, 4 kg, Black
SUNLU PLA Plus Filament Refill is a four-roll, no-spool black PLA+ supply for compatible reusable spools. Its listed 1.75 mm diameter and 4 kg total suit buyers who want several rolls of the same colour, but confirm the refill fits your spool before ordering.
At a glance
- No-spool refill format is intended for reusable filament spools.
- Listing claims compatibility with Bambu Lab AMS, ELEGOO and MarsWork refill filament.
- SUNLU claims the PLA+ offers greater toughness and impact strength than standard PLA, but gives no independently verified result.
- The listing claims neatly wound filament and vacuum-sealed packaging with desiccant.
Often bought together
Pros and cons
Pros
- Four 1 kg rolls provide 4 kg total in a single black colour.
- The stated 1.75 mm diameter and +/-0.02 mm dimensional accuracy offer useful compatibility information when matching printer requirements.
- Refill format may suit buyers already using a compatible reusable spool.
Cons
- No spool is included, so a compatible reusable spool is needed to use the refill.
Technical specifications
10 specifications| Brand | SUNLU |
|---|---|
| Model | SUNLU PLA Plus Filament Refill |
| Weight listed | 4 Kilograms |
|---|---|
| Filament diameter | 1.75 Millimetres |
| Roll quantity | 4 rolls of 1kg PLA plus refill, 4kg in total. |
| Reel hole diameter | 82.5mm (3.22inch) |
| Material listed | Polylactic Acid |
|---|---|
| Colour | Black*4 |
| Dimensional accuracy claim | +/-0.02 mm |
| Packaging claim | vacuumed sealed along with a desiccant pack |
What to know before buying
- Compatibility is claimed for Bambu Lab AMS, ELEGOO and MarsWork refills. Check the stated 82.5mm (3.22inch) reel hole diameter against your reusable spool before buying. Manufacturer claims about toughness, smooth feeding, winding and accuracy are not independently verified.
Who is it for?
A good fit for
- 3D printer owners who need black 1.75 mm PLA+ and already have a compatible reusable spool.
- Buyers who want several 1 kg rolls of one colour for ongoing printing.
Less suited to
- Anyone who needs a ready-to-use spool included in the package.
- Buyers whose printer or reusable spool does not support the listed filament diameter or refill dimensions.

Customer reviews on Amazon
- 5 stars
76% 76% - 4 stars
10% 10% - 3 stars
4% 4% - 2 stars
6% 6% - 1 star
4% 4%
Customer feedback highlights reports of reliable operation and good value, while durability and adhesion experiences are mixed. Some feedback describes consistent extrusion and good layer adhesion, while other reports mention filament loosening on the spool or being pulled down its side. These concerns matter for a no-spool refill because winding and feeding influence handling, but customer reports do not establish how this specific roll will perform in your printer. The overall rating distribution is mostly five-star, alongside a smaller spread of lower ratings.
Positive themes
- Customers report reliable operation and good value for money.
Mixed feedback
- Feedback on durability is mixed, including reports of consistent extrusion and of filament loosening on the spool.
- Adhesion feedback is mixed, with praise for layer adhesion and reports of filament being pulled down the side.
Frequently asked questions
Does this include a spool?
No spool is included. It is listed as a no-spool refill intended for a compatible reusable filament spool.
How much filament is included?
The listing describes four 1 kg rolls, 4 kg in total.
Which printers or refill systems are listed as compatible?
The listing claims compatibility with Bambu Lab AMS, ELEGOO and MarsWork refill filament. Confirm your spool dimensions and system compatibility before purchase.

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