100 1/4 Campagnolo Shimano Hub Bracket Bike Loose Bearing Balls

Yes, they rust and not necessarily with wear. I placed one in a glass with a small amount of water and by the third day the ball bearing had rusted. Which is very disappointing because I bought 200. I had planned to put them in my acrylic paint and nail polish that I use like paint. I was misled by this answer No, unless getting into contact with corrosive material like salt etc. They are made from stainless steel. By Tom on December 13, 2015

Exact fit for my bicycle wheel. Have cycled about 400km since installation and the bearings are performing well. Would purchase from seller again.

Good price, but I only needed a few ball bearings.

Good

I bought two of these and Im almost out of them, and havent had a problem with any of the bikes. Ive used them in both bottom brackets and wheel hubs.

Great price for the bearings. I use them on a slingshot I made. @heinrichsmade

Used for my rear hub. As expected

Got 100

Used these to rebuild the rear hub of my 90s MTB. They work.

Worked perfect!