TECHNICAL SPECSModel: MF83 Accuracy Class: ABEC-7Inner diameter (d):3 mmOuter diameter (D): eight mmWidth (B): 2.5 mmBearing Type: Flange Ball BearingBearing Material GCr15 Bearing SteelBall Material: GCr15 Bearing SteelSeal Type: Metal Seal CoverClearance level: C0