This is a A-MB05 Bushing, Machine 3/4" X 1 1/4" 18 Ga. (Narrow Rim) PN: MB05Main Description As Following : A-MB05 Bushing, Machine 3/4" X 1 1/4" 18 Ga. (Narrow Rim) P.N: MB05 Gauge: 18Inside Diameter: 3/4"Outside Diameter: 1 1/4" Crossed From: BR12L , 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: 3/4" Outside Diameter: 1 1/4"