V-Wheel Steel Roller Bearing VW4 V-Guide Size 4 - Outer Diameter 60mmSteel V Wheel, 60mm outer diameter (Size 4). V Guide wheels are precision ground, dual row angular contact roller bearings with hardened outer surfaces, offering low friction guidance for linear motion applications. They can be used with internal or external 90 degree rails, as well as round shafts. Size 4 = 60mm diameter Matches VR4, VRD4, VRS4 and VRSD4 V Guide linear rails Precision dual row bearing construction 52100 bearing steel