30 mm x 72 mm x 19 mm FAG 6306-2RSR deep groove ball bearings

LET OUR 30 mm x 72 mm x 19 mm FAG 6306-2RSR deep groove ball bearings 10 Bearing I.D. d(mm) EXPERTS GET YOU THE PARTS YOU NEED. NTN BEARING CORP.OF AMERICA 30 mm x 72 mm x 19 mm

What is 6306-2RSR bearing interchange？