... with plastic,outer with boxDetails1. Product name: Deep groove ball bearing (metric series). 2. Product number: 6000, 6200, 6300, 6800 ... , 6900, 16000 series3. Product material: Chrome steel SAE 52100 ... in the contract.ApplicationWidely used in home appliances, electri tools, fitness equipment, motors, medical devices, motobikes, textle ...