Simthread Embroidery Thread Kit, 21 Spools, 800Y

Spools: Simthread Embroidery Thread Kit is a 21-spool set in black, white and red, intended for machine embroidery and other sewing uses. Its three-colour selection suits projects that regularly use these basics, but it is not a broad colour assortment.

At a glance

A set of 21 spools in three classic colours: black, white and red.
Locking spool base is described as holding the thread end in place.
Listing names embroidery, free-standing lace, sewing, overlock and tassel work as uses.
The listing describes compatibility with many home embroidery and sewing machines.

Price

$27.99Save 20%

Reference price: ~~$34.99~~

Price checked: Nov 13, 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

SCHMETZ Embroidery Sewing Machine Needles - Precision Needles, Size 75/11, 5-Needle Cards, Pack of 5

$36.45

Pros and cons

Pros

Three frequently used colours provide a focused refill for projects that use black, white and red.
21 spools and the locking-base design offer multiple ready-to-use thread supplies without relying on loose thread ends.

Cons

The three-colour selection is restrictive for projects needing a wide range of shades.

Technical specifications

9 specifications

Identity
Brand	Simthread

Materials and thread
Material listed	Polyester
Colour	Black, White, Red
Spool count	21 spools / kit
Length listed in details	800 meters
Length listed in features	800Y (730M)
Thread weight and size	40WT (120D/2)
Needle size stated	NM 75 / 11 embroidery machine needles

Use and care
Product care instructions	Machine Wash

What to know before buying

Listing details to confirm

Length claims are inconsistent: the title and details state 800 meters, while feature and description text state 800Y (730M). The listing also calls 800Y 730M, so confirm the per-spool length with the selected listing before buying. Compatibility is described broadly, not confirmed for a specific machine model.

Who is it for?

A good fit for

Machine embroidery or sewing projects that use black, white and red repeatedly.
Buyers wanting a polyester thread set also listed for free-standing lace, overlock and tassel work.

Less suited to

Projects that need a varied palette beyond black, white and red.
Buyers who require a confirmed per-spool length or machine-specific compatibility before purchase.

Simthread Embroidery Thread Kit, 21 Spools, 800Y · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 378 ratings

5 stars82%82%
4 stars9%9%
3 stars5%5%
2 stars1%1%
1 star3%3%

Customer feedback describes the thread as good quality and appreciates the colours and usefulness of stocking up on basics. Value is also viewed positively, while durability opinions are mixed. That combination may matter for buyers choosing a 21-spool set for recurring basic-colour work, but the feedback does not resolve the listing's conflicting length claims.

Positive themes

Customers report positive impressions of quality and colour, and appreciate stocking up on these shades.
Customers describe the set as offering good value.

Mixed feedback

Customer feedback is mixed on durability.

Frequently asked questions

How many spools are included?

The listing describes 21 spools per kit.

Which colours are listed?

Black, white and red.

What is the thread length per spool?

The listing conflicts: its title and details say 800 meters, while feature text gives 800Y (730M). Confirm the length in the selected listing before purchase.

What machines does it fit?

The listing says it is compatible with many home embroidery and sewing machines, but does not confirm compatibility with a specific model. Check your machine requirements.