12 mm x 28 mm x 8 mm NTN 7001 Single row or matched pairs of angular contact ball bearings

Single row or matched pairs of angular contact ball bearings offers a 12 mm x 28 mm x 8 mm NTN 7001 Single row or matched pairs of angular contact ball bearings selection of Genuine Single row or matched pairs of angular contact ball bearings at Wholesale Prices. We DGB BEARING IMPORTED LTD are a 12 mm x 28 mm x 8 mm NTN 7001 Single row or matched pairs of angular contact ball bearings Certified Parts Retailer 12 mm x 28 mm x 8 mm M06288 Product Group

What is 7001 bearing interchange？