High-density Foam Inserts for each of the following: 9-16mm Tubes, 14-29mm Tubes, 29-37mm Tubes. A Blank Foam Insert is also included for user customization. Each insert fits into the Recessed Platform (Part No. 504-0039-00) and one of each is included in the Large Sample Set (Model H302, Part No. 503-0282-00) for use with the Vortex-Genie 2 family of mixers and the Vortex-Genie Pulse.