3904 Centering Cone 1.703" x 2.750" (43.26 x 69.85mm) 1" Bore. Replaces: Ammco 3904, FMC/John Bean 90924, FMC/John Bean 92010, Hunter 192-111-2, Kwikway 101-0243-00, Hofmann/RJ West W 112, Performance 8554, Rels 44004, Van Norman 866446.