Wheels Manufacturing Grade 300 3/16 Loose Replacement Ball Bearing Bottle of 500

500 in a bottle for about 3cents apiece which is a good deal compared to the LBS. The Amazon description doesn't say what the ball bearing grade is. After receiving them I looked at the Wheels Manufacturing website and discovered that they are PN 3B grade 300. The site says "Grade 300 loose balls are inexpensive and an acceptable replacement for most OEM loose bearings on low to Medium quality componentry." The alternative Grade 25 balls are "Dura Ace or Record quality. 10 times more round than grade 300. Will provide a smoother ride and last longer." The Grade 25 balls PN 9B are available from Amazon for about the same overall price for a bottle of 150 about 9 cents a ball. So 5 stars for value 1 star for quality: 3 star review. You may wish to pop for the better quality balls.  Wheels Manufacturing Grade 25 3/16" Bearings Bottle/150;

Thought I'd mention it since Amazon's product description lacks the item's Grade. Look up the part number online to see for yourself via other retailers' listings.

4 stars because (1) I *have* to include a rating and (2) it looks to be a competitive price for lower-end ball bearings (for use in lower end bike equipment).;