With 1000x on one side and 4000x on the other, it gives you a self-contained sharpening system.
Two sizes are available. The standard combination stone is 8" x 2" x 1". The large one is 8-1/4" x 2-3/4" x 2".
Either one makes an excellent gift to introduce someone to water stones.
To read a comparison of our water stones, click the "Tech" link below.