Univen Replacement 14291600 Blender Blade Fits Black and Decker Blenders Models BL1900, BL3900, BL4900, BL5000, BL5900, BL6000, BL9000 Univen replacement 14291600 blender blade cutter. Fits Black and Decker blender models BL1900, BL3900, BL4900, BL5000, BL5900, BL6000, BL9000.