uxcell 51103 Thrust Ball Bearings 17mm x 30mm x 9mm Carbon Steel Single Direction: Amazon.com: Industrial & Scientific
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