V-Guide Wheel Bearing, Bore 0.1870 In, Pbc Linear, Mfr#: VW1

V-Guide Wheel Bearing, Bearing Protection Shielded, Bore Diameter 0.187 in, For Use With V-Guide Rail, Lubrication Permanently Greased, Outside Diameter 0.771 in, Overall Width 0.31 in, Size 1, System of Measurement Inch, Wheel Material 52100 Steel, Vee Angle 90 Degrees