This is a A-MB02 Bushing, Machine 1/2" X 7/8" 18 Ga. (Narrow Rim) PN: MB02Main Description As Following : A-MB02 Bushing, Machine 1/2" X 7/8" 18 Ga. (Narrow Rim) P.N: MB02 Gauge: 18Inside Diameter: 1/2"Outside Diameter: 7/8" Found in Section & Models : Shop Supply > Machinery Bushings, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : Gauge: 18 Inside Diameter: 1/2" Outside Diameter: 7/8"