500Pcs Assorted Loose Bicycle Bearing Balls 1/8, 5/32, 3/16 7/32 and 1/4

Visual inspection - I didnt count them. Five sizes in zipped bags, lightly lubricated. All enclosed in a sealed clear plastic bag. The product looks good, no extraneous material. Labeled Qingzheng and made in China.

The finish is good

My sample of the 1/4 balls indicated a typical size of 0.2498 with a standard deviation of 35 millionths of an inch. These fixed my bicycle tires rough rotation, so for the price I am happy. Good set to have handy.

Accurate

Rebuilding bike wheels for my multiple bikes, found these,.. all good. No issues.

Great value for money, and the 5/32 fits just right in my controller that had no pivot to make it not able to press all four directions at once on the d-pad. Only downside is that I wish the packaging was a little bit better, like instead of using small baggies.

As advertised. I miked some bearings , all within 10-15 ten thousandths. Good enough for a bicycle.

This product does exactly what it is supposed to do.

Cheap and decent assortment of bearings for bikes. Really only need 2 sizes for common cup and cone bike hubs and bottom brackets. 9 * 1/4 balls per side in the rear hub, 10 * 9/10/11 rule-of-thumb. Nine 1/4 balls per side in the rear hub, 10 3/16 balls per side in the front hub, and eleven 1/4 balls per side in the bottom bracket. 3/16 balls per side in the front hub, and 11 * 1/4 balls per side in the bottom bracket. Use 1/8” and 5/32” in headsets and pedals that use loose or caged balls. They work and the price is right. I didn’t measure them and I take their hardness values at face value. (You want the balls softer than the races so the easy to replace balls wear, not the races.) Pull apart old bearings. Take out balls and probably lose some. Measure balls or just look up what is needed. Clean out old grease from races. Apply new grease to races. Place balls in grease. Reassemble bearing. Tighten preload (aka sideways tightness) until you have that magic spot between too loose/sideways play and too tight/binding. Expect to take a few tries to get it right.

Name of product is misleading. They are G25 balls. Still suitable for my application.