"price":"85
but they are different in some key dimensions
Bearing Material: 52100 Steel
"price":"151
Industry Number: 6004-ZZ C3 {"@context":"https://schema
6006-ZZ SKF Shielded Radial Ball Bearing (0126) 6300 Series Radial Ball Bearings "price":"85Item: Radial Ball Bearing, Bearing Type: Double Shield, Bore Dia.: 30 mm, Bore Tolerance: +0 0. 01 mm, Outside Dia.: 55 mm, Outside Dia. Tolerance: +0 0. 013 mm, Width: 13 mm, ABEC Tolerance: 1, Dynamic Load Capacity: 2,970 lb., Static Load Capacity: 1,860 lb., Max. RPM: 15,000, Temp. Range: 40 Degrees to 350 Degrees F., Bearing Material: 52100 Chrome Steel, Cage Material: Pressed Steel, Shield Material: Pressed Steel, Lubrication: Polyrex EM Grease,