NTN BCA NB105SS1 is a radial ball bearing with a 47mm outside diameter. Radial ball bearings carry load perpendicular to the shaft and support rotating shafts in housings. This is a genuine NTN BCA part from Pro Gear and Transmission.FeaturesNTN BCA brand bearingPart number NB105SS1Radial ball bearing design47mm outside diameterTech SpecsOutside diameter: 47mmType: Radial ball bearing