This is a A-MB13 Bushing, Machine 1 1/4" X 1 7/8" 18 Ga. (Narrow Rim) PN: MB13Main Description As Following : A-MB13 Bushing, Machine 1 1/4" X 1 7/8" 18 Ga. (Narrow Rim) P.N: MB13 Gauge: 18Inside Diameter: 1 1/4"Outside Diameter: 1 7/8" Crossed From: BR20L , 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 1/4" Outside Diameter: 1 7/8"