Skate Bearings specifications:
1) Shield / closure: Open, Z, ZZ, RS, 2RS, RZ
2) Snap ring: N, NR
3) Precision grade: ABEC-1, ABEC-3, ABEC-5, ABEC-7, ABEC-9
4) Vibration level codes: V4, V3, V2, V1
5) Internal clearance codes: C2, C3, C4, C5
6)Material: Chrome steel, Stainless steel, Ceramic(ZrO2/Si3N4)
7) Retainer: PTFE, Nylon, PEEK or Stainless steel
8) Bore size: 1 - 500mm
9) Model: 672-6709, 682-6820, 692-6920, 602-6020, 623-6220, 633-6320, 16000, MR52-MR149, R, FR, MR, MFR