VXB Ball Bearings RM2-2RS V Groove Rubber Sealed Line Track Roller Bearing, 3/8", 0.437" Width, 0.375" Bore Diameter, Alloy Steel E52100 (Pack of 8): 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
10-Pack] 348-2RS - Deep Groove AB Bearing 0.590 in x 1.496 in x 0.748 in (ID x OD x Width) with Double Rubber Seal: Amazon.com: Industrial & Scientific