Chrome steel good quality bearing 16000 series Specially 16004 open bearing in big quantity non-standard parts customized 1. Brand name ... single5. Cage: brass, cold-rolled steel, nylon6. Type of seals: open, ZZ, 2RS7. Precision grade: P0, P6, P58. Vibration level ... 12. Applications: Deep groove ball bearings are widely used in home appliances, electric tools, fitness equipment, motors, medical devices ...