R166 ZZ Bearing, ID 3/16 inch x OD 3/8 inch x 1/8 inch Miniature Ball Bearing, Metal Shielded and Pre-Lubricated with Grease, 3/16 inch Precision Roller Bearing (10 Pack): Amazon.com: Industrial & Scientific
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SKF 6020-Z Deep Groove Ball Bearing, Single Shield, Standard Cage, Normal Clearance, 100mm Bore, 150mm OD, 24mm Width: Amazon.com: Industrial & Scientific