If you're shopping for a compression spring assortment, you've probably seen two kits that look almost identical. Both hold 390 springs in 28 sizes, both are stainless steel, and both are new. The main difference is the listed price: one is $10.90, the other $9.16. So which one deserves a spot in your workshop?
Quick verdict
The 390pc Compression Spring Assortment Kit at $9.16 gives you the same 390-count, 28-size stainless steel collection for a lower listed price. The 390 Piece Compression Spring Assortment Kit at $10.90 adds package dimensions, shape, and UPC details to the product specs. If you're strictly price-focused, the $9.16 kit is the pick. If you want those extra package details, the $10.90 kit is worth the extra $1.74.
| Product | Listed price | Price bar | Key specs |
|---|---|---|---|
| 390 Piece Compression Spring Assortment Kit 28 Sizes Small Steel Springs Set | USD 10.90 | Stainless steel; plain finish; round; 8.86 x 5.08 x 0.75 in; 6.74 oz | |
| 390pc Compression Spring Assortment Kit 28 Sizes Stainless Steel Small Springs | USD 9.16 | Stainless steel; plain finish; compatible groove diameter 2 mm; model CSP-01-390 |
Where each product wins
The $9.16 set wins if you're comparing prices outright. You get the same 390-piece, 28-size assortment with a stainless steel material, a plain finish, and a compatible groove diameter of 2 millimeters. It also has an item model number, which helps if you want to reference a specific part.
The $10.90 set wins if you value explicit dimensions. Its specs include package dimensions of 8.86 x 5.08 x 0.75 inches, a package weight of 6.74 ounces, a round shape, and a UPC. If those extras are worth $1.74 to you, this is the set to choose.
Product notes
390 Piece Compression Spring Assortment Kit 28 Sizes Small Steel Springs Set

This 390-piece kit is listed at USD 10.90 and includes 28 sizes. Its specs call out a stainless steel material, a plain finish, a round shape, and package dimensions of 8.86 x 5.08 x 0.75 inches. The package weight is 6.74 ounces, and the set includes a UPC. You'd choose this set if you want a spring assortment with package-level measurements spelled out. The drawback is the higher listed price compared to the other set. Both kits offer the same spring count and size range, so you're paying for the extra package details.
390pc Compression Spring Assortment Kit 28 Sizes Stainless Steel Small Springs

This 390-piece option is listed at USD 9.16 and also has 28 sizes. It's made of stainless steel with a plain finish, and its specs include a compatible groove diameter of 2 millimeters and an item model number of CSP-01-390. This is the set to pick if you want the lower listed price and still need a broad range of small compression springs. The main limitation is the lack of package dimensions and UPC in the specs. If those details don't matter for your setup, this kit is a straightforward choice.
Final choice by use case
If you want to keep the cost as low as possible, choose the 390pc Compression Spring Assortment Kit at $9.16. If you want the set that spells out package dimensions, shape, weight, and UPC, choose the 390 Piece Compression Spring Assortment Kit at $10.90. Both kits deliver 390 stainless steel springs across 28 sizes, so the decision comes down to whether the extra package details are worth $1.74.