1) Bearing type: 68, 69, 60, R, MR, 16 series
2) Bore diameter range: 1.5mm to 9mm
3) Shield/closure: open bearing, Z, ZZ, RS, 2RS
4) Tolerance codes: ABEC-1, ABEC-3
5) Vibration level codes: V2, V1
6) Internal clearance codes: C0, C2, C3, C4, C5
7) Packing: plastic tube packing or individual box packing