Martin Yale AQ701G Premier AquaBall All Purpose Moistener, Black/Blue; Eliminates the Need for Sponges, Rubber Fingers, or Unsanitary Licking of Fingers Conveniently moisten stamps, envelopes, or labels Eliminates the need for sponges, rubber fingers, or unsanitart licking of fingers Enclosed floating ball design eliminates splashing and reduces evaporation Moistens fingers to make collating, sorting, and filing easier