Please DO NOT order until you measure your jar opening. Univen replacement 175258-01 blender jar lid and center cap. Only fits round blender jars with 4.625", 4-5/8" (11.75cm) inside diameter opening. Fits Black and Decker blender models BL600, BL690, BL700 & MTB500. Please check the inside diameter of your jar opening BEFORE ordering. Please DO NOT order until you measure your jar opening.