Product guide

Z QINGZHENG 304 Stainless Steel Balls, 5 mm, 600 Count

Count: Z QINGZHENG 304 Stainless Steel Precision Balls are listed as 5 mm balls in a 600-piece quantity. The listing describes use in bicycle bearings, other mechanical applications, mixing, experiments, and crafts, but buyers should match the ball diameter to their specific project.

At a glance

Listed as 600 balls with a 5 mm outside diameter.
The listing specifies 304 stainless steel and says the balls have a small amount of surface grease.
Suggested applications include bicycle bearings, casters, drawer slides, paint or nail-polish mixing, experiments, and crafts.

Price

$7.04Save 50%

Reference price: ~~$14.09~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

The stated 5 mm diameter and 600-count quantity give buyers clear size and volume information for projects needing many matching balls.
The listed material is 304 stainless steel, and the balls are described as lightly greased.

Technical specifications

7 specifications

Identity
Brand	Z QINGZHENG

Dimensions and installation
Outside diameter	5 millimeters
Dimensions listed	0.2 x 0.2 x 0.2 inches

Material and bearing details
Material	304 Stainless Steel
Bearing type	Ball Bearing
Compatible lubricant	Grease

Quantity and weight
Weight	312g

What to know before buying

The listing describes possible uses including bicycle bearings and mixing, but fit and suitability depend on the requirements of the specific equipment or project. Its claims about wear resistance, precision, and corrosion protection are not independently established here.
The listing reports a 2.5-star aggregate based on a very small rating sample, with ratings spread across low and high star categories. This offers limited guidance and does not identify why customers rated it as they did.

What’s in the box

Included

600 balls

Who is it for?

A good fit for

Buyers who need 5 mm balls in a large stated quantity for a compatible bearing or mechanical repair.
DIY or experiment projects that call for small stainless steel balls.

Less suited to

Projects that need a different ball diameter or a documented tolerance, grade, or performance specification not provided in the listing.

Customer reviews on Amazon

2.5 / 5 · 3 ratings

5 stars30%30%
4 stars0%0%
3 stars0%0%
2 stars30%30%
1 star40%40%

The supplied evidence contains aggregate ratings but no written customer feedback. The rating picture is split across low and high categories, so it provides limited evidence about consistency or specific strengths and concerns. For a size-specific purchase, verify that 5 mm matches your application rather than treating the ratings as a measure of fit.

Frequently asked questions

How many balls are listed?

The listing states 600 pieces.

What diameter are the balls?

The listed outside diameter is 5 millimeters.

Are they described as lubricated?

Yes. The listing says the surface is coated with a small amount of grease.

What uses does the listing suggest?

It mentions bearings in bicycles and other applications, casters, drawer slides, mixing paint or nail polish, experiments, and crafts. Confirm size and suitability for your specific use.