Uxcell 5mm Chrome Steel Bearing Balls G5 Precision 30 Pack Descriptions: Chrome Steel is widely used in bearing. It features excellent surface quality high hardness high load capacity and wear resistance. Bearing balls are useful in valve pumps and spray paint bottles for agitation sprinkling systems appliance components casters drawer slides locking mechanisms semi-precision bearings and lots of other industrial and consumer products. Notice: Please confirm the Ball Diameter you are ordering.