When a broken compression spring stalls your workbench project, you're really making two decisions: do you need a single spring for a specific job, or a whole assortment for unpredictable fixes? In the fasteners springs industrial hardware world, these two listings sit at opposite ends of the spectrum. One is a 390-piece assortment covering 28 common sizes. The other is a single 305mm black compression spring with a much wider wire-diameter range. Both are new, but they serve very different workflows.
Quick verdict
If you're repairing household items, working on DIY projects, or building prototypes where spring sizes vary, the 390-piece compression spring assortment is the obvious starting point. It gives you a broad selection for one low price. The Goo Better black compression spring is the right pick only when you already know your design calls for a long, open-end spring with a wide diameter range and you're prepared to pay for that specificity.
At a glance
| Option | Price | What you get | Best for |
|---|---|---|---|
| 390 Piece Compression Spring Assortment Kit | $10.90 [ #--------- ] | 28 sizes, 390 springs, stainless steel | General repairs and variety |
| Goo Better Black Compression Spring | $85.63 [ ########## ] | 305mm length, 0.3-6mm wire diameter, open ends | Specific long-spring jobs |
Where each product wins
The assortment kit wins on cost, quantity, and organization. Its labeled sections make it easy to find the right spring. The Goo Better black compression spring wins on length and range. It offers a 305mm length, an open-end design, and a wire diameter range of 0.3-6mm, which goes well beyond the kit's maximum 0.8mm.
Key material and design differences
What sets these two apart beyond price is the material. The Goo Better spring is built from spring steel, a material valued for high plasticity and fatigue resistance. The assortment kit is made from 304 stainless steel, which is chosen for its resistance to rust and corrosion. If your springs will face moisture or humidity, the stainless kit has the advantage. If repeated heavy use is your main concern, the spring steel option may be more appropriate. The open ends on the Goo Better spring also mean it can sit flat against contact surfaces, while the kit's compartment case keeps your workspace tidy.
Product notes
Compression Spring Black 0.3-6mm Wire Diameter Small Springs Steel 305mm Length
This is a single, purpose-built spring. The price reflects that focus: you're paying for a specific long length with a wide wire diameter range and an open-end design. If your project calls for a continuous spring that needs to reach further or handle heavier wire, this listing gives you the range to work with. Compared to the assortment, you're also getting a spring that can be used in a wider range of custom applications. The trade-off is that you're buying one spring, not a set. For everyday repairs where you need several sizes, this single piece won't cover you, and you'll have to source additional springs separately. That makes it a specialized purchase rather than an all-round solution.
390 Piece Compression Spring Assortment Kit 28 Sizes Small Steel Springs Set
This kit gives you 390 springs across 28 sizes for a price much lower than the single spring above. Its material resists rust and corrosion, so it holds up well in humid or high-stress environments. The reusable compartmentalized case with labeled sections keeps everything organized, which is a real time-saver during a project. The limitation is the size range: wire diameters top out at 0.8mm, outer diameters at 8mm, and free lengths at 30mm. That means larger or longer spring needs fall outside this kit's coverage, so for heavy-duty applications you may still need a separate, more specific spring. Still, for most small repairs and prototypes, it's difficult to beat the convenience of having 390 options ready to go.
Final choice by use case
Choose the 390-piece assortment when you want broad coverage for everyday fixes, automotive repairs, or hobby projects-at $10.90, it's the lower-priced option. Choose the Goo Better black compression spring when you need a specific 305mm-long, open-end spring with a wider wire diameter range, and you're comfortable with the $85.63 price.
