V-Wheel - Sealed Stainless Steel VWSS3 V-Guide Size 3 - Outer Diameter: 45mmStainless Steel V Wheel, 45mm outer diameter (Size 3) and permanently sealed and lubricated. V Guide wheels are dual row angular contact roller bearings 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 3 = 45mm outer diameter 440 stainless steel construction Permanently sealed and lubricated Matches VRS3 and VRSD3 V Guide linear rails Precision dual