This is a A-MB01 Bushing, Machine 1/2" X 3/4" 14 Ga. (Narrow Rim) PN: MB01Main Description As Following : A-MB01 Bushing, Machine 1/2" X 3/4" 14 Ga. (Narrow Rim) P.N: MB01 Gauge: 14Inside Diameter: 1/2"Outside Diameter: 3/4" Found in Section & Models : Shop Supply > Machinery Bushings, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : Gauge: 14 Inside Diameter: 1/2" Outside Diameter: 3/4"