Fenner Drives B121040 Keyless Bushing is a 40 mm bore, 7-Bolt Series locking bushing designed for keyless mounting on a shaft. The part number B121040 identifies this specific model within Fenner Drives’ 7 Bolt Series. This bore size and bolt configuration specify the product's fit for 40 mm bore applications in Fenner Drives' keyless bushings lineup.
