... deep, honed raceways, resulting in a perfectly balanced bearing can be used in a wide range of applications ... type (Metal shields), 2RS type (Contact rubber seals), 2RZ (Non-contact rubber seals). The 6000 Ball bearings usage: Motor, Power tools, ... Good shining+ black chamfer3.High speed, low noise, long life4.High-end technology5. Qualified by ISO9002:1994 systemPackagetube/single colored box+ carton + ...