The least expensive I could find, shipped quickly to my door. I needed 1" bearings to use in a metal sculpture (for eyes) and these were perfect. Sorry I do not have any technical or length of service for you other than that for my intended purpose they will never wear out or require lubrication and that's pretty good for a steel bearing!
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December 27, 2018
Reviewer:
Brian Kelly from New Waterford, NS Canada
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November 1, 2018
Reviewer:
Dietrich Dyck from Coaldale, AB Canada
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Good service
January 18, 2018
Reviewer:
George Skelding from Niagara Falls, ON Canada
ball bearings