20 mm x 42 mm x 12 mm NTN 6004LLB/5K Single row deep groove ball bearings

20 mm x 42 mm x 12 mm NTN 6004LLB/5K Single row deep groove ball bearings SNR BEARING CORP.OF AMERICA Cylindrical Roller B Category SEARCH - Whether it's 20 mm x 42 mm x 12 mm agriculture or construction equipment your working on, Has theSingle row deep groove ball bearings you need.

What is 6004LLB/5K bearing cross reference？