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
625-2RS Bearing 5x16x5mm Double Rubber Sealed Miniature Ball Bearings 625RS for VORON Mobius 2/3 3D Printer (Pick of 10Pcs): Amazon.com: Industrial & Scientific
Amazon.com: 20 Pcs 608 2RS Ball Bearings – Bearing Steel and Double Rubber Sealed Miniature Deep Groove Ball Bearings (8mm x 22mm x 7mm) : Sports & Outdoors
20 Pack 608 ZZ Ball Bearing, Bearing Steel & Double Iron Sealed Miniature Deep Groove 608