Abstract: A mold for forming hollow blow molded containers is made in multiple sections to create a cavity in the shape of the desired container when the mold is in the closed position. A recess is formed in the inner surface of at least one of the sections of the mold body, and a removable insert is designed to be placed in the recess. The insert may carry design indicia on it; and it is held in place by a set screw extending through the top of the mold body section in which it is located. Thus, insertion and removal of different inserts may be accomplished without disassembling the mold.