Overview
This 840-piece breadboard jumper wire kit gives you a lifetime supply of solid-core, pre-formed jumpers in a labeled compartment box. The wires are bent into flat U-shapes at standard breadboard spacing so they sit flush and keep your circuits tidy. With 14 lengths sorted by color and size, you always have the exact hop you need.
The storage case keeps everything organized on the bench, and the wires work with any 2.54mm breadboard for Arduino, ESP32, Raspberry Pi, and Pico prototyping.
At a Glance
Pieces
840
Lengths
14 sizes
Type
Solid-core, pre-formed
Storage
Compartment box
Spacing
2.54mm multiples
Fits
Standard breadboards
Specifications
| Parameter | Value |
| Quantity | 840 pieces (~60 each of 14 sizes) |
| Conductor | Tinned copper, solid core |
| Wire Gauge | ~24 AWG |
| Length Range | 14 lengths, short hops to long runs |
| Pin Pitch | 2.54mm (0.1in) multiples |
| Storage | Sorted plastic compartment box |
| Color Coding | By length |
How to Use
Match the wire length to the gap between your two breadboard holes, then press both square pins straight down. The wire lies flat against the board for a clean, readable layout.
| Step | Action |
|---|---|
| 1 | Count the holes between the two points you want to join. |
| 2 | Take the matching size from its labeled compartment. |
| 3 | Press both pins fully into the breadboard. |
| 4 | Return leftovers to the box so sizes stay sorted. |
Tip: Keeping the wires sorted by length in the box saves time on every build. Use longer flexible Dupont wires for off-board connections to modules and sensors.
Frequently Asked Questions
Are these solid or flexible?
Solid-core and pre-bent, so they hold their shape and lie flat for neat breadboard wiring. For connecting separate boards or modules, use flexible Dupont jumpers instead.
How many of each length are there?
Roughly 60 pieces of each of the 14 lengths, totaling 840. The most common short and mid lengths get used the most, and you have plenty of spares.
Do they fit any breadboard?
Yes, any standard 2.54mm (0.1in) pitch breadboard, which is virtually all hobby breadboards.
Can I reuse them?
Yes. Pull straight up to remove and drop them back in the box. Avoid bending the pins repeatedly so they last.
What do the colors indicate?
Color marks length so you can grab the right size fast. It is not tied to voltage, but you can follow your own convention if you like.