3 inch diameter x 1 inch thick, 90/95 durometer urethane insert. Can be used with or without a container. If over-squeezed without a container, it will crack. COLOR WILL VARY.
2 inch diameter x 1 inch thick urethane, 90/95 durometer. Can be used with or without a container. If over-squeezed without a container, it will crack. COLOR WILL VARY.