why does the description state the standard spacing of 2.54mm/0.1" while the illustrations specify the non-standard 2.5mm/0.09"?

The ones I got were 0.1-in (2,.54mm)

Are the square or round female connector?

All connector shells are rectangular. Within each rectangular connector shell, the individual female connectors themselves are designed [shaped] to receive mating square header pins. The solder-tail ends of the female connectors are flat.

What size wire can be used with these ? will they work with 20 gage?

The solder tabs on these headers are intended to be soldered to a PCB -- for PCB to PCB connections. I suppose you could try to solder individual wires to individual tabs [then heat-shrink the joints], but you'd probably risk melting the plastic housings. Plus, your 20ga wire suggests current requirements that might exceed the ratings for these pins. If I were you, I'd look elsewhere for alternatives.

Does this include any 1x4 female headers? the description says it does under "number of pins" but under "package details" it does not list it.

Yes, a couple of them, what you see in the first picture is the different connectors that come in the package

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Glarks Glarks 112Pcs 2.54mm Male and Female Pin Header Connector Assortment Kit, 100pcs Stackable Shield Header and 12pcs Breakaway PCB Board Pin Header for Arduino Prototype Shield

Product ID: 269305548

Details

Colour
Black
Connector type
Pin
Contact material
Copper
Insulation material
Plastic
Terminal
Pin Terminal

📏2.54mm standard pitch

🔩112 versatile pins

🧰All-in-one kit

112.89 DT

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Description

🔌 Power your prototypes with the ultimate pin header kit — don’t get left behind!

ORGANIZED PORTABLE - Transparent storage box keeps your kit neat and ready for on-the-go innovation.
DURABLE BUILD QUALITY - Copper contacts with insulated plastic housing for reliable, long-lasting connections.
STACKABLE SHIELD READY - Perfect height headers designed to clear USB-B connectors and stack multiple shields effortlessly.
PRECISION 2 54 MM SPACING - Industry-standard pitch ensures seamless compatibility with Arduino and breadboards.
COMPLETE PIN HEADER ARSENAL - 112 pieces covering all pin lengths and types for every prototyping need.

The Glarks 112-piece Pin Header Connector Assortment Kit offers a comprehensive selection of male and female headers with 2.54mm spacing, ideal for Arduino and PCB prototyping. Featuring stackable shield compatibility, durable copper contacts, and a convenient storage box, this kit is engineered for professionals and makers seeking reliable, versatile connectivity solutions.

Specifications

ASIN	B07CWSXY7P
Best Sellers Rank	#10,655 in Computers ( See Top 100 in Computers ) #272 in Single-Board Computers & Accessories
Brand Name	Glarks
Color	Black
Colour	Black
Connector Gender	Male and Female
Connector Type	Pin
Connector type	Pin
Contact Material	Copper
Contact material	Copper
Customer Reviews	4.6 out of 5 stars 828 Reviews
Insulation Material Type	Plastic
Insulation material	Plastic
Manufacturer	Glarks
Material	Plastic
Material Type	Plastic
Maximum Voltage	5 Volts (DC)
Model	8541770554
Number of Items	112
Part Number	GLAPZKIT-112
Specification Met	CE
Terminal	Pin Terminal
UPC	603935399623
Unit Count	1.0 Count

Reviews

A**D

Good

Its good and easy to solder and use

22.10.2023

T**.

Great assortment of headers.

Arrived fast and as described. Has a really good selection of headers. Did the job that I needed.

16.05.2025

C**N

Parfait

Bon assortiment, bonnes dimension. Propre, se brase simplement avec un peu de résine.

10.03.2026

G**I

Come da aspettativa

Utili per il bricolage

4.09.2023

C**E

Great Selection

These are great for your microcontrollers and programmers for making jigs and circuit boards,Perfect.

13.05.2025

M**L

Facil y práctico

Pues la forma más fácil que crear conexiones entre pcb

14.10.2025

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112.89 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

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