uxcell 688ZZ Ball Bearing 8mm x 16mm x 5mm Double Shielded 688-2Z 2080088 Deep Groove Bearings, Carbon Steel (Pack of 20): Amazon.com: Industrial & Scientific
uxcell 688ZZ Ball Bearing 8mm x 16mm x 5mm Double Shielded 688-2Z 2080088 Deep Groove Bearings, Carbon Steel (Pack of 20): Amazon.com: Industrial & Scientific
Amazon.com: TONGCHAO Professional 10PCS 688ZZ Bearing 8 x 16 x 5mm Grade P4 Miniature Ball Bearings 688Z for 3D Printer Heatbed : Industrial & Scientific