Aquaball Floating Ball Envelope Moistener, 1 1-4" X 1 1-4" X 5 3-8", Black, BlueConveniently moisten stamps, envelopes or fingers. Eliminates the need for sponges, rubber fingers or unsanitary licking of fingers. Enclosed floating ball design eliminates splashing and reduces evaporation. Keeps water clean. Nonslip feet. Moistener Size: 1 1 4" x 1 1 4" x 5 3 8"; Color(s): Black; Blue; Material(s): Glycerin. Package Includes: Includes casing, lid, gasket, ball.