No long-term quality test yet. But they seem to be of good quality. Good product for the price so far. The physical tolerances are precise, so the fit is good.
Linear Clamping Support Bearing by Sydien
4 Review
Enhanced Performance Sydien SCS12UU Bearing Bushing Diameter for Precision Machinery
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Bearing 608- ZZ1MC3E (8x22x7) NSK//80018
Stens 285 556 Caster Yoke
3 Review
βοΈ Stens 780-004 Snow Blower Scraper Bar
Stens 150 260 Recoil Starter Assembly: Efficient and Reliable for Easy Start-ups
Stens Metering Diaphragm Gasket 92 251 8