50 mm x 90 mm x 20 mm SNR 1210KC3 Double row self aligning ball bearings

How do I place Flat roller shape: an EMERGENCY order for BEARING CORP.OF AMERICA a 50 mm x 90 mm x 20 mm SNR 1210KC3 Double row self aligning ball bearings 50 mm x 90 mm x 20 mm that I want to pick up at a our store? Needle Rollers bearing element:

What is 1210KC3 bearing cross reference？