When you need a compression spring, the practical question is simple: do you buy one specific spring or a kit of many small sizes? Prices in this head-to-head run from $3.69 for a single Compression Spring option to $10.90 for a compression spring assortment. The better buy depends on whether you have a precise specification or want coverage for multiple jobs.
Quick Verdict
The single Compression Spring option is the right call when you already know the exact spring you need. The assortment kit is the better call when you'd rather have a range of small springs on hand for multiple repairs. The single spring is the direct one-part answer; the assortment is the broader all-size answer.
At a Glance Comparison
| Product | Price | What You Get | Ideal For |
|---|---|---|---|
| Compression Spring Various Size (single) | USD 3.69 | One 300mm spring with 4mm outer diameter and open ends, made of spring steel | A specific single spring job |
| 390-Piece Compression Spring Assortment Kit | USD 10.90 | 390 springs across 28 sizes with a compartmentalized case | Stocking small springs for many repairs |
Where Each Product Wins
The single Compression Spring wins when you don't want to buy extra springs. It is a one-piece option, and it covers a defined small-spring job. The assortment kit wins when variety matters more. It puts many sizes in one purchase, so you can handle a surprise repair without buying another spring.
Product Notes
Compression Spring Various Size (Single)
This option is a single compression spring with a 4mm outer diameter, 300mm length, and open ends. It is made from spring steel, making it a straightforward part for a defined project. The main reason to choose it is that you get exactly one long, small-diameter spring without extra pieces to sort. The limitation is that this is a one-piece purchase, so it works best when you already know the size you need. If the 4mm outer diameter and 300mm length don't match your project, you should be confident about the size before buying, since this package contains exactly one spring.
Compression Spring Assortment Kit
This kit bundles 390 springs in 28 different sizes, with wire diameters from 0.3 to 0.8mm, outer diameters from 2 to 8mm, and free lengths from 5 to 30mm. The springs are made of 304 stainless steel with a plain finish, and they come in a reusable compartmentalized case with labeled sections. The reason to choose it is the coverage: one purchase gives you a range of small springs for various jobs. The limitation is that the whole kit stays small. Outer diameters max out at 8mm and free lengths max out at 30mm, so a 300mm spring like the single option won't be found here. If your needs stay within those compact dimensions, this kit is a practical multi-size choice.
Final Choice by Use Case
Choose the Compression Spring Various Size option when you need a single long, small-diameter spring and want a targeted purchase. Choose the Compression Spring Assortment Kit when you want broad small-spring coverage and corrosion-resistant stainless steel. The single spring is the quick fix; the assortment is the stock-up solution.
