VXB 608ZZ Set of 8 Skateboard Bearing 608Z Shielded Ball Bearings: Deep Groove Ball Bearings: Amazon.com: Industrial & Scientific
CNXBB 10pcs 606ZZ Ball Bearing, Double Metal Sealed Deep Groove Bearings 6x17x6mm, High Temperature High Speed and Low Noise,Suitable for Electric Motor Applications (10, 606-ZZ): Amazon.com: Industrial & Scientific
Hard case on 608-z ball bearings : Amazon.de: DIY & Tools