Item: SR2ZZStructure: Deep GrooveMaterial: Stainless SteelBore Dia (d): 3.175 mmOuter Dia (D): 9.525 mmWidth (B): 3.967 mmClosures: Metal SealLubrication: GreaseMagnetic: littleHardness: 58HRCCorrosion Resistance: GeneralClearance: C0Grades: ABEC-7